(177 days)
The Phencyclidine assay is used for the qualitative analysis of phencyclidine in human urine with a cutoff of 25 ng/mL for use in clinical laboratories. Measurements obtained by this device are used in the diagnosis and treatment of phencyclidine use or overdose.
The Phencyclidine assay is calibrated with phencyclidine and will detect phencyclidine and its metabolites and analogs.
The Phencyclidine assay provides only a preliminary analytical test result. A more specific alternate chemical method must be used in order to obtain a confirmed analytical result. Gas chromatography/mass spectrometry (GC/MS) is the preferred confirmatory method. Clinical consideration and professional judgment should be applied to any drug of abuse test result, particularly when preliminary positive results are used.
Phencyclidine is an in vitro diagnostic assay for the qualitative analysis of Phencyclidine in human urine. The assay is a homogeneous enzyme immunoassay with a 25 ng/mL cutoff. The assay is based on competition between drug in the specimen and drug labeled with the enzyme glucose-6-phosphate dehydrogenase (G6PDH) for antibody binding sites. Enzyme activity decreases upon binding to the antibody, so the drug concentration in the specimen can be measured in terms of enzyme activity. Active enzyme converts NAD to NADH, resulting in an absorbance change that can be measured spectrophotometrically.
Acceptance Criteria and Device Performance Study for Phencyclidine Assay
1. Table of Acceptance Criteria and Reported Device Performance
The provided document describes a predicate device study, where the new Phencyclidine assay is compared to an existing, legally marketed device (Emit® II Phencyclidine assay) and a gold standard (GC/MS). The acceptance criteria are implicitly defined by the demonstration of "substantial equivalence" and "acceptable correlation."
| Acceptance Criteria Category | Specific Criteria (Implicit) | Reported Device Performance (Phencyclidine Assay) |
|---|---|---|
| Agreement with Predicate Device (Emit II) | "Acceptable correlation" with Emit® II Phencyclidine assay on the SYVA®-30R Analyzer. Implicitly, a high percentage of agreement. | 99% agreement with the Emit II Phencyclidine assay. One discrepant sample was positive with the Phencyclidine assay and negative with Emit II but shown to contain 14.9 ng/mL of phencyclidine by GC/MS. |
| Agreement with Gold Standard (GC/MS) | "Acceptable correlation" with GC/MS. Implicitly, a high percentage of agreement. | 93% agreement with GC/MS. |
| Qualitative Interpretation | Must provide qualitative analysis of phencyclidine in human urine at a 25 ng/mL cutoff. | Provides qualitative analysis of phencyclidine in human urine with a 25 ng/mL cutoff. |
| Precision | Demonstrates acceptable within-run and total precision across various control levels. Implicitly, low coefficient of variation (CV). | Total %CV for Verifier I: 1.42%. Total %CV for Cutoff Calibrator: 2.14%. Total %CV for Verifier II: 1.03%. Total %CV for -25% and +25% Control of Cutoff Calibrator: 2.20% and 2.07%, respectively. |
| Limit of Detection (Sensitivity) | Clinically relevant limit of detection. (No specific numerical criterion is stated, but typically an LOD below the cutoff is expected). | Limit of detection (sensitivity) is 3 ng/mL. |
2. Sample Size Used for the Test Set and Data Provenance
- Sample Size: The document does not explicitly state the total number of clinical specimens used for the comparative performance studies. It mentions that "The clinical specimens tested ranged from 14.9 to 78.5 ng/mL," indicating that multiple samples within this range were tested. However, a specific numerical count for the test set is not provided.
- Data Provenance: Not explicitly stated (e.g., country of origin). The studies appear to be retrospective as they involve testing clinical specimens with known drug concentrations or comparing against existing methods.
3. Number of Experts Used to Establish the Ground Truth for the Test Set and Qualifications
Not applicable. This device is an in vitro diagnostic assay for drug detection, and ground truth for quantitative measurements (like drug concentration) is established through analytical gold standards (GC/MS) rather than expert interpretation of images or clinical symptoms.
4. Adjudication Method for the Test Set
Not applicable. Adjudication methods like 2+1 or 3+1 are typically used for medical image interpretation where multiple human readers assess a case and their discrepancies are resolved by an expert. For chemical assays, the "ground truth" is established by more definitive analytical methods (GC/MS in this case).
5. Multi-Reader Multi-Case (MRMC) Comparative Effectiveness Study
No, a multi-reader multi-case (MRMC) comparative effectiveness study was not done. This type of study focuses on how human reader performance changes with or without AI assistance, which is not relevant for an in vitro diagnostic assay that produces a direct analytical result.
6. Standalone (Algorithm Only) Performance
Yes, a standalone performance study was done. The document describes the performance of the Phencyclidine assay as an algorithm-only device (an in vitro diagnostic assay is inherently a standalone device). Its performance was assessed against a predicate device (Emit II) and a gold standard (GC/MS).
7. Type of Ground Truth Used
The primary ground truth used for evaluating the Phencyclidine assay was Gas Chromatography/Mass Spectrometry (GC/MS). The report states, "The Phencyclidine assay method comparison yielded acceptable correlation with GC/MS." It also mentions one sample where the discrepancy between the new assay and the predicate was resolved by GC/MS. For precision studies, specific control materials with known concentrations were used.
8. Sample Size for the Training Set
The document does not provide information on the sample size for a training set. This is typical for an enzyme immunoassay of this type, where the "training" involves optimizing the chemical reagents and assay parameters rather than machine learning on a large dataset.
9. How the Ground Truth for the Training Set Was Established
Not applicable in the context of machine learning. For this type of chemical assay, the "ground truth" for development would involve using known concentrations of phencyclidine and its metabolites to establish the assay's dose-response curve, cutoff, and to optimize its analytical performance (e.g., reagent concentrations, reaction times) to accurately detect the substance at the specified cutoff.
{0}------------------------------------------------
MAR 1 3 2002
510(k) Summary
Submitter's Name/Address Abbott Laboratories 1920 Hurd Drive MS 1-8 Irving, Texas 75038
Contact Person Linda Morris Senior Regulatory Affairs Specialist Regulatory Affairs (972) 518-6711 Fax (972) 753-3367
November 21, 2001 Date of Preparation of this Summary: Device Trade or Proprietary Name: Phencyclidine Device Common/Usual Name or Classification Name: Phencyclidine LCM/Class II Classification Number/Class:
This summary of 510(k) safety and effectiveness information is being submitted in accordance with the requirements of SMDA 1990 and 21 CFR 807.92.
The assigned 510(k) number is: K013096.
Test Description:
Phencyclidine is an in vitro diagnostic assay for the qualitative analysis of Phencyclidine in human urine. The assay is a homogeneous enzyme immunoassay with a 25 ng/mL cutoff. The assay is based on competition between drug in the specimen and drug labeled with the enzyme glucose-6-phosphate dehydrogenase (G6PDH) for antibody binding sites. Enzyme activity decreases upon binding to the antibody, so the drug concentration in the specimen can be measured in terms of enzyme activity. Active enzyme converts NAD to NADH, resulting in an absorbance change that can be measured spectrophotometrically.
{1}------------------------------------------------
Substantial Equivalence:
The Phencyclidine assay is substantially equivalent to the Emil® II Phencyclidine assay (K904765) on the SYVA®-30R Analyzer.
Both assays yield similar Performance Characteristics.
Similarities:
- Both assays are in vitro immunoassays. .
- Both assays can be used for the qualitative analysis of Phencyclidine. .
- Both assays vield similar results. .
- Both assays are based on the competition between drug in the specimen and drug labeled with the . enzyme glucose-6-phosphate dehydrogenase (G6PDH) for antibody binding sites.
- Both assays have the same assay ranges (cutoff). t
Differences:
- The Phencyclidine assay is qualitative. The Emit II Phencyclidine assay is qualitative and . semiquantitative.
Intended Use:
The Phencyclidine assay is used for the qualitative analysis of phencyclidine in human urine with a cutoff of 25 ng/mL. For use in clinical laboratories.
The Phencyclidine assay is calibrated with phencyclidine and will detect phencyclidine and its metabolites and analogs.
Performance Characteristics:
Comparative performance studies were conducted using the AEROSET® System. The Phencyclidine assay method comparison yielded acceptable correlation with the Emit II Phencyclidine assuy on the SYVA-30R Analyzer. The concordance table for the AEROSET Phencyclidine assay shows 99% agreement. One sample was positive using the Phencyclidine assay and negative using the Emit II Phencyclidine assay on the SYVA-30R Analyzer. This sample was shown to contain 14.9 ng/mL of phencyclidine as determined by GCMS. The Phencyclidine assay method comparison yielded
{2}------------------------------------------------
acceptable correlation with GC/MS. The concordance table for the AEROSET Phencyclidine assay shows 93% agreement with GC/MS. The clinical specimens tested ranged from 14.9 to 78.5 ng/mL. Precision studies were conducted using the Phencyclidine assay. A within-run and total precision study was performed using five levels of control material. The total %CV for Verifier I is 1.42%. The total %CV for the Cutoff Calibrator is 2.14%. The total %CV for Verifier II is 1.03%. The total %CV for the - 25% and the + 25% Control of Cutoff Calibrator samples are 2.20% and 2.07%, respectively. The Phencyclidine assay cutoff is 25 ng/mL. The limit of detection (sensitivity) of the Phencyclidine assay is 3 ng/mL. These data demonstrate that the performance of the Phencyclidine assay is substantially equivalent to the performance of the Emit II Phencyclidine assay on the SYVA-30R Analyzer.
Conclusion:
The Phencyclidine assay is substantially equivalent to the Emit® II Phencyclidine assay on the SYVA-30R Analyzer as demonstrated by results obtained in the studies.
{3}------------------------------------------------
Image /page/3/Picture/1 description: The image shows the logo for the Department of Health & Human Services - USA. The logo is a circular seal with the text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" arranged around the top half of the circle. Inside the circle is a stylized image of an eagle or bird-like figure with its wings spread.
Food and Drug Administration 2098 Gaither Road Rockville MD 20850
MAR 1 3 2002
Ms. Linda Morris Senior Regulatory Affairs Specialist Abbott Laboratories 1921 Hurd Dr. Irving. Texas 75038
Re: K013096 Trade/Device Name: Phencyclidine Regulatory Class: Class II Product Code: LCM Dated: November 26, 2001 Received: November 28, 2001
Dear Ms. Morris:
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.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to such 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 Part 801); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
{4}------------------------------------------------
Page 2 -
This letter will allow you to begin marketing your device as described in your 510(k) premarket This letter will and in your your substantial equivalence of your device to a legally marketed predicate device results in a classification for your device and thus, permits your device to proceed to the market.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801 and ' If you desire bpoint an invitro diagnostic devices), please contact the Office of Compliance at (301) 594-4588. Additionally, for questions on the promotion and advertising of your device, (201) 594-15681 - 12 Compliance at (301) 594-4639. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR 807.97). Other general information on your responsibilities under the Act may be obtained from the Division of Small mornation on your house and Consumer Assistance at its toll-free number (800) 638-2041 or (301) 443-6597 or at its internet address "http://www.fda.gov/cdrb/dsma/dsmamain.html".
Sincerely yours,
Steven Butman
Steven I. Gutman, M.D., M.B.A. Director Division of Clinical Laboratory-Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
{5}------------------------------------------------
510(k) Number (if known): K013096
Phencyclidinc Device Name: _________________________________________________________________________________________________________________________________________________________________
Indications For Use:
The Phencyclidine assay is used for the qualitative analysis of phencyclidine in human urine with a cutoff of 25 ng/mL for use in clinical laboratories. Measurements obtained by this device are used in the diagnosis and treatment of phencyclidine use or overdose.
The Phencyclidine assay is calibrated with phencyclidine and will detect phencyclidine and its metabolites and analogs.
The Phencyclidine assay provides only a preliminary analytical test result. A more specific alternate chemical method must be used in order to obtain a confirmed analytical result. Gas chromatography/mass spectrometry (GC/MS) is the preferred confirmatory method. Clinical consideration and professional judgment should be applied to any drug of abuse test result, particularly when preliminary positive results are used.
(Division Sign-Off)
Division of C
510(k) Number crato
(PLEASE DO NOT WRITE BELOW THIS LINE - CONTINUE ON ANOTHER PAGE IF NE'DEE
| Concurrence of CDRH, Office of Device Evaluation (ODE) |
|---|
| -------------------------------------------------------- |
| Prescription Use (Per 21 CFR 801.109) | OR | Over-The-Counter Use_ |
|---|---|---|
| (Optional Format 1-2-96) |
N/A