(62 days)
Healgen Oxazepam Test is an immunochromatographic assay for the qualitative determination of Oxazepam (a drug in the benzodiazepine class) in human urine at a Cut-Off concentration of 300 ng/m L. The test is available in a Strip format, a Cassette format, a Dip Card format and a Cup format.
The test may yield preliminary positive results even when prescription drug Oxazepam is ingested, at prescribed doses; it is not intended to distinguish between prescription use or abuse of this drug. There is no uniformly recognized cutoff concentration level for oxazepam in urine. The test provides only preliminary test results. A more specific alternative chemical method must be used in order to obtain a confirmed analytical result. GC/MS is the preferred confirmatory method. Clinical consideration and professional judgment should be exercised with any drug of abuse test result, particularly when the preliminary result is positive.
For in vitro diagnostic use only. It is intended for over-the-counter and for prescription use.
Healgen Morphine Test is an immunochromatographic assay for the qualitative determination of morphine (a drug in the opiate class) in human urine at a Cut-Off concentration of 2000 ng/mL. The test is available in a Strip format, a Cassette format, a Dip Card format and a Cup format.
The test provides only preliminary test results. A more specific alternative chemical method must be used in order to obtain a confirmed analytical result. GC/MS is the preferred confirmatory method. Clinical consideration and professional judgment should be exercised with any drug of abuse test result, particularly when the presult is positive. For in vitro diagnostic use only. It is intended for over-the-counter and for prescription use.
Healgen Oxazepam Test and Healgen Morphine Test are immunochromatographic assays for Oxazepam and Morphine. Each assay test is a lateral flow system for the qualitative detection of Oxazepam and Morphine (target analyte) in human urine. The products are in vitro diagnostic devices, which come in the form of: Strips, Cassettes, DipCards, or Cups. Each product contains a Test Device (in one of the four formats), and a package insert. Each test device is sealed with a desiccant in an aluminum pouch.
This document describes the performance characteristics and acceptance criteria for the "Healgen Oxazepam Test" and "Healgen Morphine Test," which are immunochromatographic assays for the qualitative determination of Oxazepam and Morphine in human urine.
Here's a breakdown of the requested information:
1. Table of Acceptance Criteria & Reported Device Performance:
The document doesn't explicitly state "acceptance criteria" as pass/fail thresholds in a dedicated table format. Instead, it presents performance data that implicitly serves as the proof of meeting intended performance. The key performance metrics evaluated are precision and method comparison (clinical sample testing) near the cut-off concentrations, and lay-user study accuracy.
I've extracted the relevant performance values. For "acceptance criteria," I'll interpret this as the implied high accuracy expected from such diagnostic tests.
| Performance Metric | Specific Test and Concentration | Implied Acceptance Criteria (e.g., high agreement with GC/MS, low false rates) | Reported Device Performance (Oxazepam) | Reported Device Performance (Morphine) |
|---|---|---|---|---|
| Precision | Samples at -100% to -25% of cut-off | 100% agreement with expected negative result | 50-/0+ (50 negative, 0 positive) across all concentrations (-100%, -75%, -50%, -25%) and all formats (Strip, Cassette, Dip Card, CUP) for all 3 lots tested. | 50-/0+ across all concentrations (-100%, -75%, -50%, -25%) and all formats (Strip, Cassette, Dip Card, CUP) for all 3 lots tested. |
| Precision | Samples at +25% to +100% of cut-off | 100% agreement with expected positive result | 50+/0- (50 positive, 0 negative) across all concentrations (+25%, +50%, +75%, +100%) and all formats (Strip, Cassette, Dip Card, CUP) for all 3 lots tested. | 50+/0- across all concentrations (+25%, +50%, +75%, +100%) and all formats (Strip, Cassette, Dip Card, CUP) for all 3 lots tested. |
| Precision | Samples at Cut-off concentration | High percentage of correct classifications (mix of positive/negative expected) | Oxazepam Strip: 22-/28+ (22 negative, 28 positive); Cassette: 24-/26+; Dip Card: 18-/32+; CUP: 20-/30+ (across 3 lots each). This indicates expected variability near the cutoff. | Morphine Strip: 18-/32+; Cassette: 22-/28+; Dip Card: 22-/28+; CUP: 20-/30+ (across 3 lots each). This indicates expected variability near the cutoff. |
| Method Comparison (Clinical Samples) | Agreement with GC/MS for negative samples (Negative, Low Negative, Near Cutoff Negative) | Very high agreement with GC/MS | Oxazepam (all formats, all 3 viewers): All samples in these categories (10 + 15 + 15 = 40 samples per viewer) were correctly identified as negative (e.g., "10", "15", "15" in negative rows). | Morphine (all formats, all 3 viewers): All samples in these categories (10 + 16 + 14 = 40 samples per viewer) were correctly identified as negative (e.g., "10", "16", "14" in negative rows). |
| Method Comparison (Clinical Samples) | Agreement with GC/MS for positive samples (Near Cutoff Positive, High Positive) | Very high agreement with GC/MS | Oxazepam (all formats, all 3 viewers): Generally high agreement, with some discordant results near cutoff. For example, Strip format: 14/16 positive in "Near Cutoff Positive", 24/24 positive in "High Positive." See detailed discordant rows for exceptions. | Morphine (all formats, all 3 viewers): Generally high agreement, with some discordant results near cutoff. For example, Strip format: 13/17 positive in "Near Cutoff Positive", 23/23 positive in "High Positive." See detailed discordant rows for exceptions. |
| Lay-user Study (Accuracy) | Overall correct results for each concentration level tested (-100% Cutoff to +75% Cutoff) | ≥ 90% correct for all concentrations | Generally 90-100% correct results across all concentration levels and all formats. For example, -25% Cutoff: 90-95% correct; +25% Cutoff: 90-95% correct. Others 100%. | Generally 90-100% correct results across all concentration levels and all formats. For example, -25% Cutoff: 90% correct; +25% Cutoff: 90-95% correct. Others 100%. |
| Lay-user Study (Instructions) | Ease of understanding instructions | Easily understood by lay users | All lay users indicated that the device instructions can be easily followed. Flesch-Kincaid Grade Level: 7. | All lay users indicated that the device instructions can be easily followed. Flesch-Kincaid Grade Level: 7. |
2. Sample sizes used for the test set and the data provenance:
-
Precision Studies (Analytical Performance):
- Test Set Size: For each drug (Oxazepam and Morphine), for each format (Strip, Cassette, Dip Card, CUP), and for each of the 3 lots, 50 samples were tested at each of 9 concentrations (-100%, -75%, -50%, -25%, Cut-off, +25%, +50%, +75%, +100% of cut-off).
- Total precision samples per drug: (9 concentrations * 50 samples/conc * 4 formats * 3 lots) = 5400 samples
- Total precision samples (Oxazepam + Morphine): 10,800 samples.
- Data Provenance: The document states "samples were prepared by spiking drug in negative samples." "These samples were tested using three batches of each device." The provenance (country of origin), whether retrospective or prospective, is not explicitly stated for these analytical samples, but they appear to be experimentally prepared rather than naturally occurring clinical samples.
- Test Set Size: For each drug (Oxazepam and Morphine), for each format (Strip, Cassette, Dip Card, CUP), and for each of the 3 lots, 50 samples were tested at each of 9 concentrations (-100%, -75%, -50%, -25%, Cut-off, +25%, +50%, +75%, +100% of cut-off).
-
Method Comparison Studies (Clinical Samples):
- Test Set Size: For each drug (Oxazepam and Morphine), and for each format (Strip, Cassette, Dip Card, CUP), 80 "unaltered clinical samples" (40 negative and 40 positive) were tested.
- Total method comparison samples per drug: (80 samples * 4 formats) = 320 samples.
- Total method comparison samples (Oxazepam + Morphine): 640 samples.
- Data Provenance: "unaltered clinical samples." The geographic origin of these clinical samples is not specified. They appear to be retrospective as they were collected and then blind labeled for testing.
- Test Set Size: For each drug (Oxazepam and Morphine), and for each format (Strip, Cassette, Dip Card, CUP), 80 "unaltered clinical samples" (40 negative and 40 positive) were tested.
-
Lay-user Study:
- Test Set Size: 140 lay persons for Oxazepam devices, and 140 lay persons for Morphine devices. Each participant was given 1 blind-labeled sample.
- For Oxazepam and Morphine, each lay person tested one sample at one of 7 concentrations (-100%, -75%, -50%, -25%, +25%, +50%, +75%, of cut-off).
- For each concentration level, 20 samples were tested. So, 20 * 7 = 140 samples were tested per drug.
- Data Provenance: The study was "performed at three intended user sites." The geographic origin is not specified. The samples were "prepared at the following concentrations; negative, +/-75%, +/-50%, +/-25% of the cutoff by spiking drugs into drug free-pooled urine specimens." This indicates a prospective experimental design using prepared urine samples, not naturally occurring clinical samples.
- Test Set Size: 140 lay persons for Oxazepam devices, and 140 lay persons for Morphine devices. Each participant was given 1 blind-labeled sample.
3. Number of experts used to establish the ground truth for the test set and the qualifications of those experts:
-
For Precision Studies & Lay-user Studies: The document states that drug concentrations in the prepared samples were "confirmed by GC/MS." GC/MS (Gas Chromatography/Mass Spectrometry) is a highly reliable analytical chemistry method, and its results are considered the gold standard for confirming drug concentrations. The "experts" here are the calibrated GC/MS instrument and the analytical chemists operating and interpreting it. Specific expert qualifications are not detailed, but it's implied they adhere to standard laboratory practices for GC/MS.
-
For Method Comparison Studies (Clinical Samples): The ground truth was established by "GC/MS results." Similar to above, GC/MS is the reference method, implying that the ground truth was derived from this analytical technique rather than human expert interpretation of the test device itself.
4. Adjudication method for the test set:
- Precision Studies & Lay-user Studies: No explicit adjudication method is mentioned. The ground truth (GC/MS confirmation) is considered definitive for these prepared samples.
- Method Comparison Studies: The comparison was directly against "GC/MS results," which serves as the independent truth. The results from each of the three "laboratory assistants" (viewers) were compared individually to the GC/MS result. There was no listed adjudication process among the viewers; their individual agreement/disagreement with GC/MS is reported.
5. If a multi-reader multi-case (MRMC) comparative effectiveness study was done, if so, what was the effect size of how much human readers improve with AI vs without AI assistance:
- No, an MRMC comparative effectiveness study was not done. This document describes a traditional in-vitro diagnostic device (lateral flow immunoassay for drugs of abuse) and its validation. It is not an AI-assisted diagnostic device, nor does it involve human readers interpreting images or data with and without AI assistance. The "viewers" in the method comparison study are "laboratory assistants" performing the test and visually reading the results, not interpreting complex medical images.
6. If a standalone (i.e. algorithm only without human-in-the loop performance) was done:
- Not applicable in the context of AI/algorithms. This device is a rapid, visual immunochromatographic assay. Its "performance" is inherently linked to human observation of the test lines. There is no underlying algorithm separate from the chemical reaction displayed visually. The "standalone" performance is essentially the listed "Precision" and "Method Comparison" results, where the device itself (the chemical immunoassay) is assessed for its ability to correctly manifest positive/negative results under various conditions, which are then read by a human.
7. The type of ground truth used:
- GC/MS (Gas Chromatography/Mass Spectrometry) results were used as the gold standard ground truth for both the precision studies (prepared samples) and the method comparison studies (clinical samples). This is a highly accurate and quantitative analytical method for drug concentration determination.
8. The sample size for the training set:
- Not applicable. This document describes a traditional immunochromatographic assay, not a machine learning or artificial intelligence model. Therefore, there is no "training set" in the computational sense. The device's "training" is inherent in its chemical design and manufacturing process, optimized through R&D and quality control, not through data-driven learning.
9. How the ground truth for the training set was established:
- Not applicable. As established in point 8, there is no "training set" for an AI model. For the development and verification of such an immunoassay, the "ground truth" would be established through established chemical and biological assays, often using purified standards and reference methods like GC/MS (as seen in the performance validation), during the manufacturing and R&D phases to ensure the reagents and test strip components function as intended. However, this is part of the product development and quality control, not a "training set" for an algorithm.
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Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
October 16, 2014
HEALGEN SCIENTIFIC LLC C/O JOE SHIA LSI INTERNATIONAL INC. 504 EAST DIAMOND AVE., SUITE F GAITHERSBURG MD 20877
Re: K142280
Trade/Device Name: Healgen Oxazepam Test (Strip, Cassette, Cup, Dio Card): Healgen Morphine Test (Strip, Cassette, Cup, Dip Card) Regulation Number: 21 CFR 862.3170 Regulation Name: Benzodiazepine test system Regulatory Class: II Product Code: JXM, DJG Dated: August 12, 2014 Received: August 15, 2014
Dear Mr. Joe Shia:
We have reviewed your Section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (Act) that do not require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.
Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Parts 801 and 809); medical device reporting (reporting of medical device-related adverse events) (21 CFR 803); good manufacturing practice requirements as set forth in the quality systems (OS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
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If you desire specific advice for your device on our labeling regulations (21 CFR Parts 801 and 809), please contact the Division of Industry and Consumer Education at its toll-free number (800) 638 2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to
http://www.fda.gov/MedicalDevices/Safety/ReportaProblem/default.htm for the CDRH's Office of Surveillance and Biometrics/Division of Postmarket Surveillance.
You may obtain other general information on your responsibilities under the Act from the Division of Industry and Consumer Education at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm.
Sincerely yours,
Courtney
Courtney H. Lias, Ph.D. Director Division of Chemistry and Toxicology Devices Office of In Vitro Diagnostics and Radiological Health Center for Devices and Radiological Health
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Indications for Use
Form Approved: OMB No. 0910-0120 Expiration Date: January 31, 2017 See PRA Statement below.
510(k) Number (if known) K142280
Device Name
Healgen Oxazepam Test (Strip, Cassette, Cup, Dip Card) Healgen Morphine Test (Strip, Cassette, Cup, Dip Card)
Indications for Use (Describe)
Healgen Oxazepam Test is an immunochromatographic assay for the qualitative determination of Oxazepam (a drug in the benzodiazepine class) in human urine at a Cut-Off concentration of 300 ng/m L. The test is available in a Strip format, a Cassette format, a Dip Card format and a Cup format.
The test may yield preliminary positive results even when prescription drug Oxazepam is ingested, at prescribed doses; it is not intended to distinguish between prescription use or abuse of this drug. There is no uniformly recognized cutoff concentration level for oxazepam in urine. The test provides only preliminary test results. A more specific alternative chemical method must be used in order to obtain a confirmed analytical result. GC/MS is the preferred confirmatory method. Clinical consideration and professional judgment should be exercised with any drug of abuse test result, particularly when the preliminary result is positive.
For in vitro diagnostic use only. It is intended for over-the-counter and for prescription use.
Healgen Morphine Test is an immunochromatographic assay for the qualitative determination of morphine (a drug in the opiate class) in human urine at a Cut-Off concentration of 2000 ng/mL. The test is available in a Strip format, a Cassette format, a Dip Card format and a Cup format.
The test provides only preliminary test results. A more specific alternative chemical method must be used in order to obtain a confirmed analytical result. GC/MS is the preferred confirmatory method. Clinical consideration and professional judgment should be exercised with any drug of abuse test result, particularly when the presult is positive. For in vitro diagnostic use only. It is intended for over-the-counter and for prescription use.
| Type of Use (Select one or both, as applicable) | |
|---|---|
| Prescription Use (Part 21 CFR 801 Subpart D) | Over-The-Counter Use (21 CFR 801 Subpart C) |
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510(k) SUMMARY
| 1. Date: | October 6, 2014 |
|---|---|
| 2. Submitter: | HEALGEN SCIENTIFIC LLC5213 Maple StBellaire, TX77401 |
| 3. Contact person: | Jianqiu FangHEALGEN SCIENTIFIC LLC5213 Maple StBellaire, TX77401Telephone: 713-733-8088 |
Telephone: 713-733-8088 Fax: 713-733-8088 Email: bryan@healgen.com
-
- Device Name: Healgen Oxazepam Test (Strip, Cassette. Cup, Dip Card) Healgen Morphine Test (Strip, Cassette, Cup, Dip Card)
Classification:
| ProductCode | CFR # | Panel |
|---|---|---|
| JXM | 21 CFR, 862.3170 Benzodiazepine Test System | Toxicology |
| DJG | 21 CFR, 862.3650 Opiate Test System | Toxicology |
-
- Predicate Devices:
K052115 First Check Multi Drug Cup 12
- Predicate Devices:
-
- Intended Use
Healgen Oxazepam Test is an immunochromatographic assay for the qualitative determination of Oxazepam (a drug in the benzodiazepine class) in human urine at a Cut-Off concentration of 300 ng/m L. The test is available in a Strip format, a Cassette format, a Dip Card format and a Cup format.
- Intended Use
The test may yield preliminary positive results even when prescription drug Oxazepam is ingested, at prescribed doses; it is not intended to distinguish between prescription use or abuse of this drug. There is no uniformly recognized cutoff concentration level for oxazepam in urine. The test provides only preliminary test results. A more specific alternative chemical must be used in order to obtain a confirmed analytical result. GC/MS is the preferred confirmatory method. Clinical consideration and
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professional judgment should be exercised with any drug of abuse test result, particularly when the preliminary result is positive.
For in vitro diagnostic use only. It is intended for over-the-counter and for prescription use.
Healgen Morphine Test is an immunochromatographic assay for the qualitative determination of morphine (a drug in the opiate class) in human urine at a Cut-Off concentration of 2000 ng/mL. The test is available in a Strip format, a Cassette format, a Dip Card format and a Cup format.
The test provides only preliminary test results. A more specific alternative chemical method must be used in order to obtain a confirmed analytical result. GC/MS is the preferred confirmatory method. Clinical consideration and professional judgment should be exercised with any drug of abuse test result, particularly when the preliminary result is positive.
For in vitro diagnostic use only. It is intended for over-the-counter and for prescription use.
7. Device Description
Healgen Oxazepam Test and Healgen Morphine Test are immunochromatographic assays for Oxazepam and Morphine. Each assay test is a lateral flow system for the qualitative detection of Oxazepam and Morphine (target analyte) in human urine. The products are in vitro diagnostic devices, which come in the form of: Strips, Cassettes, DipCards, or Cups. Each product contains a Test Device (in one of the four formats), and a package insert. Each test device is sealed with a desiccant in an aluminum pouch.
8. Substantial Equivalence Information
A summary comparison of features of the Healgen Oxazepam Test and Healgen Morphine Test and the predicate device is provided in Table 1 & Table 2.
| Item | Device | Predicate -K052115 |
|---|---|---|
| Intended Use | For the qualitative determination of drugsof abuse in human urine. | Same |
| Drug Analyte | Oxazepam | BenzodiazepineDrug Class |
| Methodology | Competitive binding, lateral flowimmunochromatographic assays based onthe principle of antigen antibodyimmunochemistry. | Same |
| Specimen Type | Human Urine | Same |
| Cut-Off Values | 300 ng/mL | Same |
Table 1: Features Comparison of Healgen Oxazepam Test and the Predicate Device
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| Item | Device | Predicate -K052115 |
|---|---|---|
| IntendedPopulation | For over-the-counter and prescriptionuses. | Forover-the-counteruse. |
| Configurations | Strip, Cassette, Cup, Dip Card | Cup |
| Table 2: Features Comparison of Healgen Morphine Test and the Predicate Device | ||||||
|---|---|---|---|---|---|---|
| -------------------------------------------------------------------------------- | -- | -- | -- | -- | -- | -- |
| Item | Device | Predicate - K052115 |
|---|---|---|
| Intended Use | For the qualitative determination ofdrugs of abuse in human urine. | Same |
| Drug Analyte | Morphine | Opiate Drug Class |
| Methodology | Competitive binding, lateral flowimmunochromatographic assays basedon the principle of antigen antibodyimmunochemistry. | Same |
| Specimen Type | Human Urine | Same |
| Cut-Off Values | 2000 ng/mL | Same |
| IntendedFor over-the-counter and prescription | For over-the-counter | |
| Population | uses. | use. |
| Configurations | Strip, Cassette, Cup, Dip Card | Cup |
9. Test Principle
Healgen Oxazepam Test and Healgen Morphine Test are rapid tests for the qualitative detection of Oxazepam and Morphine in urine samples. Each assay test is a lateral flow chromatographic immunoassay. During testing, a urine specimen migrates upward by capillary action. If target drugs are present in the urine specimen below its cut-off concentration, it will not saturate the binding sites of its specific antibody (monoclonal mouse antibody) coated on the particles. The antibody-coated particles will then be captured by immobilized drug-conjugate and a visible colored line will show up in the test line region. The colored line will not form in the test line region if the target drug level exceeds its cut-off concentration because it will saturate all the binding sites of the antibody coated on the particles. A band should form in the control region of the devices regardless of the presence of drug or metabolite in the sample.
10. Performance Characteristics
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1. Analytical Performance
a.Precision
Precision studies were carried out for samples with concentrations of -100% cut-off, -50% cut-off, -25% cut-off, at the cut-off, +25% cut-off, +50% cut-off, +75% cut-off and +100% cut-off. These samples were prepared by spiking drug in negative samples. Each drug concentration was confirmed by GC/MS. All sample aliquots were blind labeled and randomized. For each concentration, tests were performed two runs per day for 25 days. The results obtained are summarized in the following tables:
Oxazepam
| Result | -100%Cut-off | -75%Cut-off | -50%Cut-off | -25%Cut-off | Cut-off | +25%Cut-off | +50%Cut-off | +75%Cut-off | +100%Cut-off | |
|---|---|---|---|---|---|---|---|---|---|---|
| Drug | ||||||||||
| Lot: 1201001 | 50-/0+ | 50-/0+ | 50-/0+ | 50-/0+ | 22-/28+ | 50+/0- | 50+/0- | 50+/0- | 50+/0- | |
| Lot: 1201002 | 50-/0+ | 50-/0+ | 50-/0+ | 50-/0+ | 22-/28+ | 50+/0- | 50+/0- | 50+/0- | 50+/0- | |
| Lot: 1201003 | 50-/0+ | 50-/0+ | 50-/0+ | 50-/0+ | 22-/28+ | 50+/0- | 50+/0- | 50+/0- | 50+/0- |
Strip Format
Cassette Format
| Result -100% | -75% - | -50% | -25% | +25% +50% +75% +100% | |||
|---|---|---|---|---|---|---|---|
| Drug | Cut-off Cut-off Cut-off Cut-off | Cut-off | Cut-off Cut-off Cut-off Cut-off | ||||
| Lot: 1201004 | 50-10+ | 50-/0+ 50-/0+ 50-/0+ 24-/26+ 50+/0- 50+/0- 50+/0- 50+/0- | |||||
| Lot: 1201005 | 50-10+ | 50-/0+ 50-/0+ 50-/0+ 24-/26+ 50+/0- 50+/0- 50+/0- 50+/0- | |||||
| Lot: 1201006 | 50-/0+ 50-/0+ 50-/0+ 50-/0+ 24-/26+ 50+/0- 50+/0- 50+/0- 50+/0- |
Dip Card Format
| Result | -100%Cut-off | -75%Cut-off | -50%Cut-off | -25%Cut-off | Cut-off | +25%Cut-off | +50%Cut-off | +75%Cut-off | +100%Cut-off | |
|---|---|---|---|---|---|---|---|---|---|---|
| Drug | Lot: 1201007 | 50-/0+ | 50-/0+ | 50-/0+ | 50-/0+ | 18-/32+ | 50+/0- | 50+/0- | 50+/0- | 50+/0- |
| Lot: 1201008 | 50-/0+ | 50-/0+ | 50-/0+ | 50-/0+ | 18-/32+ | 50+/0- | 50+/0- | 50+/0- | 50+/0- | |
| Lot: 1201009 | 50-/0+ | 50-/0+ | 50-/0+ | 50-/0+ | 18-/32+ | 50+/0- | 50+/0- | 50+/0- | 50+/0- |
CUP Format
| Result | -100%Cut-off | -75%Cut-off | -50%Cut-off | -25%Cut-off | Cut-off | +25%Cut-off | +50%Cut-off | +75%Cut-off | +100%Cut-off | |
|---|---|---|---|---|---|---|---|---|---|---|
| Drug | ||||||||||
| Lot: 1201010 | 50-/0+ | 50-/0+ | 50-/0+ | 50-/0+ | 20-/30+ | 50+/0- | 50+/0- | 50+/0- | 50+/0- | |
| Lot: 1201011 | 50-/0+ | 50-/0+ | 50-/0+ | 50-/0+ | 20-/30+ | 50+/0- | 50+/0- | 50+/0- | 50+/0- | |
| Lot: 1201012 | 50-/0+ | 50-/0+ | 50-/0+ | 50-/0+ | 20-/30+ | 50+/0- | 50+/0- | 50+/0- | 50+/0- |
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Morphine
Strip Format
| Result | -100%Cut-off | -75%Cut-off | -50%Cut-off | -25%Cut-off | Cut-off | +25%Cut-off | +50%Cut-off | +75%Cut-off | +100%Cut-off | |
|---|---|---|---|---|---|---|---|---|---|---|
| Drug | Lot: 1112001 | 50-/0+ | 50-/0+ | 50-/0+ | 50-/0+ | 18-/32+ | 50+/0- | 50+/0- | 50+/0- | 50+/0- |
| Lot: 1112002 | 50-/0+ | 50-/0+ | 50-/0+ | 50-/0+ | 18-/32+ | 50+/0- | 50+/0- | 50+/0- | 50+/0- | |
| Lot: 1112003 | 50-/0+ | 50-/0+ | 50-/0+ | 50-/0+ | 18-/32+ | 50+/0- | 50+/0- | 50+/0- | 50+/0- |
Cassette Format
| Result | -100%Cut-off | -75%Cut-off | -50%Cut-off | -25%Cut-off | Cut-off | +25%Cut-off | +50%Cut-off | +75%Cut-off | +100%Cut-off | |
|---|---|---|---|---|---|---|---|---|---|---|
| Drug | Lot: 1112004 | 50-/0+ | 50-/0+ | 50-/0+ | 50-/0+ | 22-/28+ | 50+/0- | 50+/0- | 50+/0- | 50+/0- |
| Lot:1112005 | 50-/0+ | 50-/0+ | 50-/0+ | 50-/0+ | 22-/28+ | 50+/0- | 50+/0- | 50+/0- | 50+/0- | |
| Lot: 1112006 | 50-/0+ | 50-/0+ | 50-/0+ | 50-/0+ | 22-/28+ | 50+/0- | 50+/0- | 50+/0- | 50+/0- |
Dip Card Format
| Result | -100%Cut-off | -75%Cut-off | -50%Cut-off | -25%Cut-off | Cut-off | +25%Cut-off | +50%Cut-off | +75%Cut-off | +100%Cut-off | |
|---|---|---|---|---|---|---|---|---|---|---|
| Drug | ||||||||||
| Lot: 1112007 | 50-/0+ | 50-/0+ | 50-/0+ | 50-/0+ | 22-/28+ | 50+/0- | 50+/0- | 50+/0- | 50+/0- | |
| Lot: 1112008 | 50-/0+ | 50-/0+ | 50-/0+ | 50-/0+ | 22-/28+ | 50+/0- | 50+/0- | 50+/0- | 50+/0- | |
| Lot: 1112009 | 50-/0+ | 50-/0+ | 50-/0+ | 50-/0+ | 22-/28+ | 50+/0- | 50+/0- | 50+/0- | 50+/0- |
CUP Format
| Result | -100%Cut-off | -75%Cut-off | -50%Cut-off | -25%Cut-off | Cut-off | +25%Cut-off | +50%Cut-off | +75%Cut-off | +100%Cut-off | |
|---|---|---|---|---|---|---|---|---|---|---|
| Drug | ||||||||||
| Lot: 1112010 | 50-/0+ | 50-/0+ | 50-/0+ | 50-/0+ | 20-/30+ | 50+/0- | 50+/0- | 50+/0- | 50+/0- | |
| Lot: 1112011 | 50-/0+ | 50-/0+ | 50-/0+ | 50-/0+ | 20-/30+ | 50+/0- | 50+/0- | 50+/0- | 50+/0- | |
| Lot: 1112012 | 50-/0+ | 50-/0+ | 50-/0+ | 50-/0+ | 20-/30+ | 50+/0- | 50+/0- | 50+/0- | 50+/0- |
b. Linearity
Not applicable.
c.Stability
The devices are stable at 4-30℃ for 24 months based on the accelerated stability study at 45℃ and real time stability determination at both 4 ℃ and 30℃.
{8}------------------------------------------------
Control materials are not provided with the device. The labeling provides information on how to obtain control materials.
d. Cut-off
A total of 150 samples equally distributed at concentrations of -50% cut-off; -25% cut-off; cut-off; +25% cut-off; +50% cut-off were tested using three different lots of each device by three different operators. Results were all positive at and above +25% cut-off and all negative at and below -25% cut-off for both Oxazepam and Morphine. The following cut-off values for the test devices have been verified.
| Test | Calibrator | Cut-off(ng/mL) |
|---|---|---|
| Oxazepam Test | Oxazepam | 300 |
| Morphine Test | Morphine | 2000 |
e. Interference
Potential interfering substances found in human urine of physiological conditions were added to drug-free urine and target drugs urine with concentration at 25% above cut-off levels. These urine samples were tested using three batches of each device for all formats.
Compounds that showed no interference at a concentration of 100µg/mL are summarized in the following tables. There were no differences observed for different formats.
| 4-Acetamidophenol | Doxylamine | Oxolinic acid |
|---|---|---|
| Acetophenetidin | Ecaonine dydrochloride | Pentobarbital |
| N-Acetylprocainamide | Ecgonine methylester | Perphenazine |
| Acetylsalicylic acid | (-)-Ψ-Ephedrine | Phencyclidine |
| Aminoprine | Fenoprofen | Phenelzine |
| Amitriptyline | Furosemide | Phenobarbital |
| Amorbarbital | Gentisic acid | Phentermine |
| Amoxicillin | Hemoglobin | L-Phenylephrine |
| Ampicillin | Hydrocortisone | Phenylethylamine |
| 1-Ascorbic Acid | O-Hydroxyhippuric acid | Phenylpropanotamine |
| D.L-Amphetamine | p-Hydroxy-methamphetamine | Prednisone |
| Aporphine | 3-Hydroxytyramine | D.L-Propanolol |
Oxazepam
{9}------------------------------------------------
| Aspartame | Ibuprofen | D-Propoxyphene |
|---|---|---|
| Atropine | Imipramine | D-Pseudoephedrine |
| Benzillic acid | Iproniazid | Quinine |
| Benzoic acid | (±)Isoproterenol | Ranitidine |
| Benzoylecaonine | Isoxsuprine | Salicylic acid |
| Benzphetamine | Ketamine | Secobarbital |
| Bilirubin | Ketoprofen | Serotonin(5-Hydroxytyramine) |
| (±) Chlorpheniramine | Labetalol | Sertraline |
| Caffeine | Loperamide | Sulfamethazine |
| Cannabidiol | Maprotiline | Sulindac |
| Chloralhydrate | Meperidine | Tetrahydrocortisone,3 Acetate |
| Chloramphenicol | Meprobamate | Tetrahydrocortisone,(β-Dglucuronide) |
| Chlorothiazide | Methadone | Tetrahydrozoline |
| (±)Chlorpheniramine | Methoxyphenamine | Thiamine |
| Chlorpromazine | (+) 3,4-Methylenedioxy-amphetamine | Thioridazine |
| Chlorquine | (+)3,4-Methylenedioxy-methamphetamine | D.L-Tyrosine |
| Cholesterol | Nalidixic acid | Tolbutamide |
| Clomipramine | Nalorphine | Triamterene |
| Clonidine | Naloxone | Trifluoperazine |
| Cocaine hydrochloride | Naltrexone | Trimethoprim |
| Cortisone | Naproxen | Tryptamine |
| (-)cotinine | Niacinamide | D.L-Tryptophan |
| Creatinine | Nifedipine | Tyramine |
| Dextromethlorphan | Norethindrone | Uric acid |
| Diclolrfenac | D-Norpropoxyphene | Verapamil |
| Diflunisal | Noscapine | Zomepirac |
| Diaoxin | D.L-Octopamine | |
| Diphenhydramine | Oxalic acid |
Morphine
| 4-Acetamidophenol | Ecgonine methylester | Oxolinic acid |
|---|---|---|
| Acetophenetidin | (-) -Y -Ephedrine | Oxymetazoline |
| N-Acetylprocainamide | Erythromycin | Papaverine |
| Acetylsalicylic acid | β-Estradiol | Penicillin-G |
| Aminopyrine | Estrone-3-sulfate | Pentazocine |
| Amitryptyline | Ethyl-p-aminobenzoate | Pentobarbital |
| Amobarbital | Fenoprofen | Perphenazine |
| Amoxicillin | Furosemide | Phencyclidine |
| Ampicillin | Gentisic acid | Phenelzine |
| Ascorbic acid | Hemoglobin | Phenobarbital |
| D,L-Amphetamine | Hydralazine | Phentermine |
| Apomorphine | Hydrochlorothiazide | L-Phenylephrine |
| Aspartame | Hydrocortisone | β-Phenylethylamine |
| Atropine | O-Hydroxyhippuric acid | Phenylpropanolamine |
| Benzilic acid | p-Hydroxy methamphetamine | Prednisone |
| Benzoic acid | 3-Hydroxytyramine | D,L-Propanolol |
| Benzoylecgonine | Ibuprofen | D-Propoxyphene |
| Benzphetamine | Imipramine | D-Pseudoephedrine |
| Bilirubin (±) | Iproniazid | Quinidine |
| Brompheniramine | Isoproterenol | Quinine |
| Caffeine | Isoxsuprine | Ranitidine |
| Cannabidiol | Ketamine | Salicylic acid |
| Chloralhydrate | Ketoprofen | Secobarbital |
| Chloramphenicol | Labetalol | Serotonin (5-Hydroxytyramine) |
| Chlordiazepoxide | Loperamide | Sulfamethazine |
| Chlorothiazide | Maprotiline | Sulindac |
| (±) Chlorpheniramine | Meperidine | Temazepam |
| Chlorpromazine | Meprobamate | Tetracycline |
| Chlorquine | Methadone | Tetrahydrocortisone, 3Acetate |
| Cholesterol | Methoxyphenamine | Tetrahydrocortisone3 (ß-Dglucuronide) |
| Clomipramine | (+) 3,4-Methylenedioxy-amphetamine | Tetrahydrozoline |
| Clonidine | (+)3,4-Methylenedioxy-methamphetamine | Thiamine |
| Cocaine hydrochloride | Nalidixic acid | Thioridazine |
| Cortisone | Nalorphine | D, L-Tyrosine |
| (-) Cotinine | Naloxone | Tolbutamide |
| Creatinine | Naltrexone | Triamterene |
| Deoxycorticosterone | Naproxen | Trifluoperazine |
| Dextromethorphan | Niacinamide | Trimethoprim |
| Diazepam | Nifedipine | Trimipramine |
| Diclofenac | Norethindrone | Tryptamine |
| Diflunisal | D-Norpropoxyphene | D, L-Tryptophan |
| Digoxin | Noscapine | Tyramine |
| Diphenhydramine | D,L-Octopamine | Uric acid |
| Doxylamine | Oxalic acid | Verapamil |
| Ecgonine hydrochloride | Oxazepam | Zomepirac |
{10}------------------------------------------------
{11}------------------------------------------------
f. Specificity
To test the specificity, drug metabolites and other components that are likely to interfere in urine samples were tested using three batches of each device for all formats. The obtained lowest detectable concentration was used to calculate the cross-reactivity. There were no differences observed for different formats.
| Result | %Cross-Reactivity | |
|---|---|---|
| Oxazepam(Cut-off=300 ng/mL) | Positive at 300 ng/mL | 100% |
| Alprazolam | Positive at 200 ng/mL | 150% |
| Bromazepam | Positive at 1560 ng/mL | 19% |
| Chlordiazepoxide HCL | Positive at 1560 ng/mL | 19% |
| Clobazam | Positive at 100 ng/mL | 300% |
| Clonazepam | Positive at 780 ng/mL | 38% |
| Clorazepate Dipotassium | Positive at 200 ng/mL | 150% |
| Delorazepam | Positive at 1560 ng/mL | 19% |
| Desalkylflurazepam | Positive at 400 ng/mL | 75% |
| Diazepam | Positive at 200 ng/mL | 150% |
| Estazolam | Positive at 2500 ng/mL | 12% |
| Flunitrazepam | Positive at 400 ng/mL | 75% |
| a-Hydroxyalprazolam | Positive at 1260 ng/mL | 24% |
| (±) Lorazepam | Positive at 1560 ng/mL | 19% |
| RS-Lorazepam glucuronide | Positive at 160 ng/mL | 188% |
| Midazolam | Positive at 12500 ng/mL | 2.4% |
| Nitrazepam | Positive at 100 ng/mL | 300% |
| Norchlordiazepoxide | Positive at 200 ng/mL | 150% |
| Nordiazepam | Positive at 400 ng/mL | 75% |
| Temazepam | Positive at 100 ng/mL | 300% |
| Triazolam | Positive at 2500 ng/mL | 12% |
{12}------------------------------------------------
| Result | % Cross-Reactivity | |
|---|---|---|
| Morphine(Cut-off=2000 ng/mL) | Positive at 2000 ng/mL | 100% |
| O6-Acetylmorphine | Positive at 2500 ng/mL | 80% |
| Codeine | Positive at 1000 ng/mL | 200% |
| EthylMorphine | Positive at 250 ng/mL | 800% |
| Heroin | Positive at 5000 ng/mL | 40% |
| Hydromorphone | Positive at 2500 ng/mL | 80% |
| Hydrocodone | Positive at 5000 ng/mL | 40% |
| Oxycodone | Positive at 75000 ng/mL | 3% |
| Thebaine | Positive at 13,000 ng/mL | 15% |
g. Effect of Urine Specific Gravity and Urine pH
To investigate the effect of urine specific gravity and urine pH, urine samples with of 1.000 to 1.035 specific gravity or urine samples with pH 4 to 9 were spiked with target drugs at 25% below and 25% above cut-off levels. These samples were tested using three batches of each device for all formats. Results were all positive for samples at and above +25% cut-off and all negative for samples at and below -25% Cut-Off. There were no differences observed for different formats.
2. Comparison Studies
The method comparison studies for the Oxazepam Test, and the Morphine Test were performed in-house with three different laboratory assistants for each format of the device. Operators ran 80 (40 negative and 40 positive) unaltered clinical samples. The samples were blind labeled and compared to GC/MS results. The results are presented in the tables below:
| Oxazepam | ||||||
|---|---|---|---|---|---|---|
| Strip format | Negative | Low Negative by GC/MS (less than -50%) | Near Cutoff Negative by GC/MS (Between -50% and cut-off) | Near Cutoff Positive by GC/MS (Between the cut-off and +50%) | High Positive by GC/MS (greater than +50%) | |
| Viewer A | Positive | 0 | 0 | 0 | 14 | 24 |
| Negative | 10 | 15 | 15 | 2 | 0 | |
| Viewer B | Positive | 0 | 0 | 0 | 13 | 24 |
| Negative | 10 | 15 | 15 | 3 | 0 | |
| Viewer C | Positive | 0 | 0 | 0 | 14 | 24 |
| Negative | 10 | 15 | 15 | 2 | 0 |
Oxazepam
{13}------------------------------------------------
| Viewer | Sample Number | GC/MS Result | Strip FormatViewer Results |
|---|---|---|---|
| Viewer A | 549 | 306 | Negative |
| Viewer A | 523 | 303 | Negative |
| Viewer B | 549 | 306 | Negative |
| Viewer B | 523 | 303 | Negative |
| Viewer B | 579 | 312 | Negative |
| Viewer C | 549 | 306 | Negative |
| Viewer C | 523 | 303 | Negative |
Discordant Results of Oxazepam Strip
| Cassetteformat | Negative | LowNegativeby GC/MS(less than-50%) | NearCutoffNegativeby GC/MS(Between-50% andcut-off) | Near CutoffPositive byGC/MS(Betweenthe cut-offand +50%) | HighPositive byGC/MS(greaterthan+50%) | |
|---|---|---|---|---|---|---|
| Positive | 0 | 0 | 0 | 13 | 24 | |
| Viewer A | Negative | 10 | ાં ર | ાં ર | 3 | 0 |
| Viewer B | Positive | 0 | 0 | 0 | 13 | 24 |
| Negative | 10 | ા ર | ા ર | 3 | 0 | |
| Viewer C | Positive | 0 | 0 | 0 | 13 | 24 |
| Negative | 10 | ા ર | ા ર | 3 | 0 |
Discordant Results of Oxazepam Cassette
| Viewer | Sample Number | GC/MS Result | Cassette FormatViewer Results |
|---|---|---|---|
| Viewer A | 549 | 306 | Negative |
| Viewer A | 523 | 303 | Negative |
| Viewer A | 579 | 312 | Negative |
| Viewer B | 549 | 306 | Negative |
| Viewer B | 523 | 303 | Negative |
| Viewer B | 579 | 312 | Negative |
| Viewer C | 549 | 306 | Negative |
| Viewer C | 523 | 303 | Negative |
| Viewer C | 579 | 312 | Negative |
{14}------------------------------------------------
| Cup format | Negative | Low Negative by GC/MS (less than -50%) | Near Cutoff Negative by GC/MS (Between -50% and cut-off) | Near Cutoff Positive by GC/MS (Between the cut-off and +50%) | High Positive by GC/MS (greater than +50%) | |
|---|---|---|---|---|---|---|
| Viewer A | Positive | 0 | 0 | 0 | 14 | 24 |
| Negative | 10 | 15 | 15 | 2 | 0 | |
| Viewer B | Positive | 0 | 0 | 0 | 14 | 24 |
| Negative | 10 | 15 | 15 | 2 | 0 | |
| Viewer C | Positive | 0 | 0 | 0 | 14 | 24 |
| Negative | 10 | 15 | 15 | 2 | 0 |
Discordant Results of Oxazepam Cup
| Viewer | Sample Number | GC/MS Result | Cup FormatViewer Results |
|---|---|---|---|
| Viewer A | 549 | 306 | Negative |
| Viewer A | 523 | 303 | Negative |
| Viewer B | 523 | 303 | Negative |
| Viewer B | 579 | 312 | Negative |
| Viewer C | 549 | 306 | Negative |
| Viewer C | 523 | 303 | Negative |
| Dip Cardformat | Negative | LowNegativeby GC/MS(less than-50%) | Near CutoffNegative byGC/MS(Between-50% andcut-off) | Near CutoffPositive byGC/MS(Betweenthe cut-offand +50%) | HighPositive byGC/MS(greaterthan+50%) | |
|---|---|---|---|---|---|---|
| Viewer A | Positive | 0 | 0 | 0 | 12 | 24 |
| Negative | 10 | 15 | 15 | 4 | 0 | |
| Viewer B | Positive | 0 | 0 | 0 | 12 | 24 |
| Negative | 10 | 15 | 15 | 4 | 0 | |
| Viewer C | Positive | 0 | 0 | 0 | 14 | 24 |
| Negative | 10 | 15 | 15 | 2 | 0 |
Discordant Results of OxazepamDip Card
| Discordant Results of OxazepamDip Card | |||||
|---|---|---|---|---|---|
| Viewer | Sample Number | Dip Card FormatGC/MS ResultViewer Results | |||
| Viewer A | રે રેણવાડી તેમ જ દૂધની ડેરી જેવી સવલતો પ્રાપ્ય થયેલી છે. આ ગામનાં પ્રાથમિક શાળા, આંગણવાડી તેમ જ દૂધની ડેરી જેવી સવલતો પ્રાપ્ય થયેલી છે. આ ગામનાં પ્રાથમિક શાળા, આંગણવાડી તેમ | 315 | Negative | ||
| Viewer A | 549 | 306 | Negative |
{15}------------------------------------------------
| Viewer | Sample Number | GC/MS Result | Dip Card FormatViewer Results |
|---|---|---|---|
| Viewer A | 523 | 303 | Negative |
| Viewer A | 579 | 312 | Negative |
| Viewer B | 505 | 315 | Negative |
| Viewer B | 549 | 306 | Negative |
| Viewer B | 523 | 303 | Negative |
| Viewer B | 579 | 312 | Negative |
| Viewer C | 549 | 306 | Negative |
| Viewer C | 523 | 303 | Negative |
Morphine
| Stripformat | Negative | LowNegativeby GC/MS(less than-50%) | Near CutoffNegative byGC/MS(Between-50% andcut-off) | Near CutoffPositive byGC/MS(Betweenthe cut-offand +50%) | HighPositive byGC/MS(greaterthan+50%) | |
|---|---|---|---|---|---|---|
| Viewer A | Positive | 0 | 0 | 0 | 13 | 23 |
| Negative | 10 | 16 | 14 | 4 | 0 | |
| Viewer B | Positive | 0 | 0 | 0 | 13 | 23 |
| Negative | 10 | 16 | 14 | 4 | 0 | |
| Viewer C | Positive | 0 | 0 | 0 | 15 | 23 |
| Negative | 10 | 16 | 14 | 2 | 0 |
Discordant Results of Morphine Strip
| Viewer | Sample Number | GC/MS Result | Strip Format Viewer Results |
|---|---|---|---|
| Viewer A | 468 | 2036 | Negative |
| Viewer A | 466 | 2019 | Negative |
| Viewer A | 453 | 2066 | Negative |
| Viewer A | 449 | 2005 | Negative |
| Viewer B | 468 | 2036 | Negative |
| Viewer B | 466 | 2019 | Negative |
| Viewer B | 453 | 2066 | Negative |
| Viewer B | 449 | 2005 | Negative |
| Viewer C | 466 | 2019 | Negative |
{16}------------------------------------------------
| Viewer | Sample Number | GC/MS Result | Strip Format Viewer Results |
|---|---|---|---|
| Viewer C | 449 | 2005 | Negative |
| Cassetteformat | Negative | LowNegativeby GC/MS(less than-50%) | Near CutoffNegative byGC/MS(Between-50% andcut-off) | Near CutoffPositive byGC/MS(Betweenthe cut-offand +50%) | HighPositive byGC/MS(greaterthan+50%) | |
|---|---|---|---|---|---|---|
| Viewer A | Positive | 0 | 0 | 0 | 14 | 23 |
| Negative | 10 | 16 | 14 | 3 | 0 | |
| Viewer B | Positive | 0 | 0 | 0 | 13 | 23 |
| Negative | 10 | 16 | 14 | 4 | 0 | |
| Viewer C | Positive | 0 | 0 | 0 | 13 | 23 |
| Negative | 10 | 16 | 14 | 4 | 0 |
Discordant Results of Morphine Cassette
| Viewer | Sample Number | GC/MS Result | Cassette Format Viewer Results |
|---|---|---|---|
| Viewer A | 468 | 2036 | Negative |
| Viewer A | 466 | 2019 | Negative |
| Viewer A | 449 | 2005 | Negative |
| Viewer B | 405 | 2053 | Negative |
| Viewer B | 468 | 2036 | Negative |
| Viewer B | 466 | 2019 | Negative |
| Viewer B | 449 | 2005 | Negative |
| Viewer C | 405 | 2053 | Negative |
| Viewer C | 468 | 2036 | Negative |
| Viewer C | 466 | 2019 | Negative |
| Viewer C | 449 | 2005 | Negative |
{17}------------------------------------------------
| Dip Cardformat | Negative | LowNegativeby GC/MS(less than-50%) | Near CutoffNegative byGC/MS(Between-50% andcut-off) | Near CutoffPositive byGC/MS(Betweenthe cut-offand +50%) | HighPositive byGC/MS(greaterthan+50%) | |
|---|---|---|---|---|---|---|
| Viewer A | Positive | 0 | 0 | 0 | 13 | 23 |
| Viewer A | Negative | 10 | 16 | 14 | 4 | 0 |
| Viewer B | Positive | 0 | 0 | 0 | 12 | 23 |
| Viewer B | Negative | 10 | 16 | 14 | 5 | 0 |
| Viewer C | Positive | 0 | 0 | 0 | 12 | 23 |
| Viewer C | Negative | 10 | 16 | 14 | 5 | 0 |
Discordant Results of Morphine Dip Card
| Viewer | Sample Number | GC/MS Result | Dip Card FormatViewer Results |
|---|---|---|---|
| Viewer A | 405 | 2053 | Negative |
| Viewer A | 468 | 2036 | Negative |
| Viewer A | 466 | 2019 | Negative |
| Viewer A | 449 | 2005 | Negative |
| Viewer B | 405 | 2053 | Negative |
| Viewer B | 468 | 2036 | Negative |
| Viewer B | 466 | 2019 | Negative |
| Viewer B | 449 | 2005 | Negative |
| Viewer B | 429 | 2067 | Negative |
| Viewer C | 405 | 2053 | Negative |
| Viewer C | 468 | 2036 | Negative |
| Viewer C | 466 | 2019 | Negative |
| Viewer C | 449 | 2005 | Negative |
| Viewer C | 429 | 2067 | Negative |
{18}------------------------------------------------
| Cupformat | Negative | LowNegativeby GC/MS(less than-50%) | Near CutoffNegative byGC/MS(Between-50% andcut-off) | Near CutoffPositive byGC/MS(Betweenthe cut-offand +50%) | HighPositive byGC/MS(greaterthan+50%) | |
|---|---|---|---|---|---|---|
| Viewer A | Positive | 0 | 0 | 0 | 15 | 23 |
| Negative | 10 | 16 | 14 | 2 | 0 | |
| Viewer B | Positive | 0 | 0 | 0 | 14 | 23 |
| Negative | 10 | 16 | 14 | 3 | 0 | |
| Viewer C | Positive | 0 | 0 | 0 | 13 | 23 |
| Negative | 10 | 16 | 14 | 4 | 0 |
Discordant Results of Morphine Cup
| Viewer | Sample Number | GC/MS Result | Cup Format Viewer Results |
|---|---|---|---|
| Viewer A | 466 | 2019 | Negative |
| Viewer A | 449 | 2005 | Negative |
| Viewer B | 468 | 2036 | Negative |
| Viewer B | 466 | 2019 | Negative |
| Viewer B | 449 | 2005 | Negative |
| Viewer C | 405 | 2053 | Negative |
| Viewer C | 468 | 2036 | Negative |
| Viewer C | 466 | 2019 | Negative |
| Viewer C | 449 | 2005 | Negative |
Lay-user study
A lay user study was performed at three intended user sites with 140 lay persons testing the Oxazepam devices and another set of 140 persons testing the morphine devices. A total of 44 females and 96 males tested the Oxazepam samples, and 41 females and 99 males tested the Morphine samples. They had diverse educational and professional backgrounds and ranged in age from 21 to > 50 years. Urine samples were prepared at the following concentrations; negative, +/-75%, +/-50%, +/-25% of the cutoff by spiking drugs into drug free-pooled urine specimens. The concentrations of the samples were confirmed by GC/MS. Each sample was aliquoted into individual containers and blind-labeled. Each participant was provided with the package insert, 1 blind labeled sample and a device. The results are summarized below.
{19}------------------------------------------------
| % of Cutoff | Number of samples | Oxazepam Concentration by GC/MS (ng/mL) | Lay person results No. of Positive | Lay person results No. of Negative | The percentage of correct results (%) |
|---|---|---|---|---|---|
| -100% Cutoff | 20 | 0 | 0 | 20 | 100% |
| -75% Cutoff | 20 | 75 | 0 | 20 | 100% |
| -50% Cutoff | 20 | 150 | 0 | 20 | 100% |
| -25% Cutoff | 20 | 225 | 1 | 19 | 95% |
| +25% Cutoff | 20 | 375 | 19 | 1 | 95% |
| +50% Cutoff | 20 | 450 | 20 | 0 | 100% |
| +75% Cutoff | 20 | 525 | 20 | 0 | 100% |
Comparison between GC/MS and Lay Person Results (Oxazepam Strip)
Comparison between GC/MS and Lay Person Results (Oxazepam Cassette)
| Number | Oxazepam Concentration | Lay person results | The | ||
|---|---|---|---|---|---|
| % of Cutoff | ofsamples | by GC/MS(ng/mL) | No. ofPositive | No. ofNegative | percentage ofcorrect results(%) |
| -100% Cutoff | 20 | 0 | 0 | 20 | 100% |
| -75% Cutoff | 20 | 75 | 0 | 20 | 100% |
| -50% Cutoff | 20 | 150 | 0 | 20 | 100% |
| -25% Cutoff | 20 | 225 | 2 | 18 | 90% |
| +25% Cutoff | 20 | 375 | 19 | 1 | 95% |
| +50% Cutoff | 20 | 450 | 20 | 0 | 100% |
| +75% Cutoff | 20 | 525 | 20 | 0 | 100% |
Comparison between GC/MS and Lay Person Results (Oxazepam DipCard)
| Numberofsamples | Oxazepam Concentrationby GC/MS(ng/mL) | Lay person results | The | ||
|---|---|---|---|---|---|
| % of Cutoff | No. ofPositive | No. ofNegative | percentage ofcorrect results(%) | ||
| -100% Cutoff | 20 | 0 | 0 | 20 | 100% |
| -75% Cutoff | 20 | 75 | 0 | 20 | 100% |
| -50% Cutoff | 20 | 150 | 0 | 20 | 100% |
| -25% Cutoff | 20 | 225 | 1 | 19 | 95% |
| +25% Cutoff | 20 | 375 | 19 | 1 | 95% |
| +50% Cutoff | 20 | 450 | 20 | 0 | 100% |
| +75% Cutoff | 20 | 525 | 20 | 0 | 100% |
{20}------------------------------------------------
| Numberofsamples | Oxazepam Concentrationby GC/MS(ng/mL) | Lay person results | The | ||
|---|---|---|---|---|---|
| % of Cutoff | No. ofPositive | No. ofNegative | percentage ofcorrect results(%) | ||
| -100% Cutoff | 20 | 0 | 0 | 20 | 100% |
| -75% Cutoff | 20 | 75 | 0 | 20 | 100% |
| -50% Cutoff | 20 | 150 | 0 | 20 | 100% |
| -25% Cutoff | 20 | 225 | 2 | 18 | 90% |
| +25% Cutoff | 20 | 375 | 19 | 1 | 95% |
| +50% Cutoff | 20 | 450 | 20 | 0 | 100% |
| +75% Cutoff | 20 | 525 | 20 | 0 | 100% |
Comparison between GC/MS and Lay Person Results (Oxazepam Cup)
Comparison between GC/MS and Lay Person Results (Morphine Strip)
| % of Cutoff | Number of samples | MOP Concentration by GC/MS (ng/mL) | Lay person results | The percentage of correct results (%) | |
|---|---|---|---|---|---|
| -100% Cutoff | 20 | 0 | 0 | 20 | 100% |
| -75% Cutoff | 20 | 500 | 0 | 20 | 100% |
| -50% Cutoff | 20 | 1000 | 0 | 20 | 100% |
| -25% Cutoff | 20 | 1500 | 2 | 18 | 90% |
| +25% Cutoff | 20 | 2500 | 19 | 1 | 95% |
| +50% Cutoff | 20 | 3000 | 20 | 0 | 100% |
| +75% Cutoff | 20 | 3500 | 20 | 0 | 100% |
Comparison between GC/MS and Lay Person Results (Morphine Cassette)
| Numberofsamples | MOP Concentration byGC/MS(ng/mL) | Lay person results | The | ||
|---|---|---|---|---|---|
| % of Cutoff | No. ofPositive | No. ofNegative | percentage ofcorrect results(%) | ||
| -100%Cutoff | 20 | 0 | 0 | 20 | 100% |
| -75%Cutoff | 20 | 500 | 0 | 20 | 100% |
| -50% Cutoff | 20 | 1000 | 0 | 20 | 100% |
| -25% Cutoff | 20 | 1500 | 1 | 19 | 95% |
| +25% Cutoff | 20 | 2500 | 19 | 1 | 95% |
| +50% Cutoff | 20 | 3000 | 20 | 0 | 100% |
| +75% Cutoff | 20 | 3500 | 20 | 0 | 100% |
{21}------------------------------------------------
| % of Cutoff | Numberofsamples | MOP Concentration byGC/MS(ng/mL) | Lay person results | Thepercentage ofcorrect results(%) | |
|---|---|---|---|---|---|
| No. ofPositive | No. ofNegative | ||||
| -100% Cutoff | 20 | 0 | 0 | 20 | 100% |
| -75% Cutoff | 20 | 500 | 0 | 20 | 100% |
| -50% Cutoff | 20 | 1000 | 0 | 20 | 100% |
| -25% Cutoff | 20 | 1500 | 2 | 18 | 90% |
| +25% Cutoff | 20 | 2500 | 18 | 2 | 90% |
| +50% Cutoff | 20 | 3000 | 20 | 0 | 100% |
| +75% Cutoff | 20 | 3500 | 20 | 0 | 100% |
Comparison between GC/MS and Lay Person Results (Morphine DipCard)
Comparison between GC/MS and Lay Person Results (Morphine Cup)
| % of Cutoff | Numberofsamples | MOP Concentration byGC/MS(ng/mL) | Lay person results | Thepercentage ofcorrect results(%) | |
|---|---|---|---|---|---|
| -100% Cutoff | 20 | 0 | 0 | 20 | 100% |
| -75% Cutoff | 20 | 500 | 0 | 20 | 100% |
| -50% Cutoff | 20 | 1000 | 0 | 20 | 100% |
| -25% Cutoff | 20 | 1500 | 2 | 18 | 90% |
| +25% Cutoff | 20 | 2500 | 19 | 1 | 95% |
| +50% Cutoff | 20 | 3000 | 20 | 0 | 100% |
| +75% Cutoff | 20 | 3500 | 20 | 0 | 100% |
Lay-users were also given surveys on the ease of understanding the package insert instructions. All lay users indicated that the device instructions can be easily followed. A Flesch-Kincaid reading analysis was performed on each package insert and the scores revealed a reading Grade Level of 7.
-
- Clinical Studies
Not applicable.
- Clinical Studies
11.Conclusion
Based on the test principle and acceptable performance characteristics including precision, cut-off, interference, specificity and method comparison of the devices, it's concluded that the Healgen Oxazepam Test, and Healgen Morphine Test are substantially equivalent to the predicate.
§ 862.3650 Opiate test system.
(a)
Identification. An opiate test system is a device intended to measure any of the addictive narcotic pain-relieving opiate drugs in blood, serum, urine, gastric contents, and saliva. An opiate is any natural or synthetic drug that has morphine-like pharmocological actions. The opiates include drugs such as morphine, morphine glucoronide, heroin, codeine, nalorphine, and meperedine. Measurements obtained by this device are used in the diagnosis and treatment of opiate use or overdose and in monitoring the levels of opiate administration to ensure appropriate therapy.(b)
Classification. Class II (special controls). An opiate test system is not exempt if it is intended for any use other than employment or insurance testing or is intended for Federal drug testing programs. The device is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 862.9, provided the test system is intended for employment and insurance testing and includes a statement in the labeling that the device is intended solely for use in employment and insurance testing, and does not include devices intended for Federal drug testing programs (e.g., programs run by the Substance Abuse and Mental Health Services Administration (SAMHSA), the Department of Transportation (DOT), and the U.S. military).