(148 days)
The ARCHITECT iPhenobarbital assay is an in vitro chemiluminescent microparticle immunoassay (CMIA) for the quantitative measurement of phenobarbital, an anticonvulsant and sedative-hypnotic drug, in human serum or plasma on the ARCHITECT i System with STAT protocol capability. The measurements obtained are used in the diagnosis and treatment of phenobarbital overdose and in monitoring levels of phenobarbital to help ensure appropriate therapy.
The ARCHITECT iPhenobarbital Calibrators are for the calibration of the ARCHITECT i System with STAT protocol capability when used for the quantitative determination of phenobarbital in human serum or plasma.
The ARCHITECT i Phenobarbital assay is a one-step STAT immunoassay for the quantitative measurement of phenobarbital in human serum or plasma using CMIA technology, with flexible assay protocols, referred to as Chemiflex. Sample, antiphenobarbital coated paramagnetic microparticles, and phenobarbital acridiniumlabeled conjugate are combined to create a reaction mixture. The anti-phenobarbital coated microparticles bind to phenobarbital present in the sample and to the phenobarbital acridinium-labeled conjugate. After washing, pre-trigger and trigger solutions are added to the reaction mixture. The resulting chemiluminescent reaction is measured as relative light units (RLUs). An indirect relationship exists between the amount of phenobarbital in the sample and the RLUs detected by the ARCHITECT i System optics.
The provided document describes the ARCHITECT iPhenobarbital assay, which is an in vitro chemiluminescent microparticle immunoassay (CMIA) for the quantitative measurement of phenobarbital in human serum or plasma.
Here's the breakdown of the acceptance criteria and the study information:
1. Table of Acceptance Criteria and Reported Device Performance
The document does not explicitly state numerical acceptance criteria in a dedicated table. Instead, it claims substantial equivalence to a legally marketed predicate device (AxSYM Phenobarbital) based on specific performance characteristics. The key performance metrics evaluated are:
| Performance Characteristic | Acceptance Criteria (Implied) | Reported Device Performance (ARCHITECT iPhenobarbital) |
|---|---|---|
| Precision | Substantially equivalent to AxSYM Phenobarbital | Demonstrated substantial equivalence |
| Linearity | Substantially equivalent to AxSYM Phenobarbital | Demonstrated substantial equivalence |
| Interferences | Substantially equivalent to AxSYM Phenobarbital | Demonstrated substantial equivalence |
| Clinical Performance (Correlation Coefficient) | A high correlation coefficient (typically close to 1.0) compared to the predicate device | 1.0 (with AxSYM Phenobarbital) |
2. Sample Size Used for the Test Set and Data Provenance
The document does not provide specific details on the sample size used for the test set or the data provenance (e.g., country of origin, retrospective/prospective). It generally refers to "non-clinical performance data" and "clinical performance."
3. Number of Experts Used to Establish Ground Truth and Their Qualifications
This information is not applicable and therefore not provided, as this is an in vitro diagnostic (IVD) device for measuring a chemical analyte (phenobarbital), not an imaging or diagnostic device that relies on expert human image interpretation for ground truth. The "ground truth" for this device would be established by reference methods or comparison to a predicate device.
4. Adjudication Method for the Test Set
This information is not applicable, as adjudication methods are typically used in studies involving human interpretation or subjective assessments, not for quantitative chemical measurements in an IVD device.
5. Multi-Reader Multi-Case (MRMC) Comparative Effectiveness Study
An MRMC study was not done. This type of study is specifically relevant for devices where human readers interpret medical images or other complex data. The ARCHITECT iPhenobarbital assay is an automated in vitro diagnostic test for a chemical analyte.
6. Standalone Performance Study
Yes, a standalone study was done. The "Summary of Non-Clinical Performance" and "Summary of Clinical Performance" sections describe the device's performance in terms of precision, linearity, interferences, and clinical correlation with a predicate device. This is the standalone performance of the algorithm/assay itself.
- Non-Clinical Performance: Evaluated precision, linearity, and interferences of the ARCHITECT iPhenobarbital assay.
- Clinical Performance: Compared the ARCHITECT iPhenobarbital assay to the AxSYM Phenobarbital assay, yielding a correlation coefficient of 1.0.
7. Type of Ground Truth Used
The "ground truth" for the ARCHITECT iPhenobarbital assay's performance was established primarily through comparison to a legally marketed predicate device, the AxSYM Phenobarbital assay. The AxSYM Phenobarbital assay itself would have been validated against reference methods for phenobarbital measurement. The correlation coefficient of 1.0 indicates excellent agreement with the existing, validated method.
8. Sample Size for the Training Set
The document does not specify the sample size used for the training set. This information is often proprietary and not typically included in 510(k) summaries for IVD devices, especially for established assay types.
9. How the Ground Truth for the Training Set Was Established
Similarly, the document does not detail how the ground truth for any potential training set was established. For an immunoassay like this, the development process would involve extensive analytical validation using characterized samples (e.g., spiked samples, patient samples with confirmed phenobarbital levels via reference methods) to optimize reagents and assay parameters. The ground truth for training would likely be based on these characterized samples and existing, validated methods for phenobarbital measurement.
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SEP 2 6 2008
ARCHITECT iPhenobarbital
510(k) Summary (Summary of Safety and Effectiveness)
This summary of the 510(k) safety and effectiveness information is being submitted in accordance with the requirements of SMDA 1990 and 21 CFR 807.92.
Applicant Name:
Carol Jochum Senior Regulatory Affairs Specialist Abbott Laboratories 100 Abbott Park Road Abbott Park, IL 60064
Device Name:
Reagents:
Classification Name: Phenobarbital test system Trade Name: ARCHITECT iPhenobarbital Immunoassay Common Name: Phenobarbital test Governing Regulation: 862.3660 Device Classification: Class II Classification Panel: Toxicology Product Code: DLZ
Calibrators:
Classification Name: Calibrator, drug specific Trade Name: ARCHITECT iPhenobarbital Calibrators (A-F) Common Name: Calibrator Governing Regulation: 862.3200 Device Classification: Class II Classification Panel: Toxicology Product Code: DLJ
ARCHITECT iPhenobarbital 510(k) Submission
Page 1 of 3
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Legally marketed device to which equivalency is claimed:
AxSYM Phenobarbital (K940596)
Intended Use of Device:
The ARCHITECT i Phenobarbital assay is an in vitro chemiluminescent microparticle immunoassay (CMIA) for the quantitative measurement of phenobarbital, an anticonvulsant and sedative-hypnotic drug, in human serum or plasma on the ARCHITECT i System with STAT protocol capability. The measurements obtained are used in the diagnosis and treatment of phenobarbital overdose and in monitoring levels of phenobarbital to help ensure appropriate therapy.
Description of Device:
The ARCHITECT i Phenobarbital assay is a one-step STAT immunoassay for the quantitative measurement of phenobarbital in human serum or plasma using CMIA technology, with flexible assay protocols, referred to as Chemiflex. Sample, antiphenobarbital coated paramagnetic microparticles, and phenobarbital acridiniumlabeled conjugate are combined to create a reaction mixture. The anti-phenobarbital coated microparticles bind to phenobarbital present in the sample and to the phenobarbital acridinium-labeled conjugate. After washing, pre-trigger and trigger solutions are added to the reaction mixture. The resulting chemiluminescent reaction is measured as relative light units (RLUs). An indirect relationship exists between the amount of phenobarbital in the sample and the RLUs detected by the ARCHITECT i System optics.
ARCHITECT iPhenobarbital 510(k) Submission
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Comparison of Technological Characteristics:
The ARCHITECT i Phenobarbital assay is a chemiluminescent microparticle immunoassay (CMIA) method for the quantitative measurement of phenobarbital, an anticonvulsant and sedative-hypnotic drug, in human serum and plasma. The AxSYM Phenobarbital assay utilizes fluorescence polarization immunoassay (FPIA) technology for the measurement of phenobarbital, an anticonvulsant and sedative-hypnotic drug, in serum or plasma.
Summary of Non-Clinical Performance:
The ARCHITECT iPhenobarbital assay is substantially equivalent to the AxSYM Phenobarbital assay in terms of precision, linearity and interferences as demonstrated in non-clinical performance data in this 510(k) submission.
Summary of Clinical Performance:
The ARCHITECT iPhenobarbital demonstrated substantially equivalent performance to the AxSYM Phenobarbital with a correlation coefficient of 1.0.
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Image /page/3/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a stylized depiction of an eagle or bird with three wing-like shapes. The bird is positioned within a circular border. The text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" is arranged around the upper portion of the circle.
Food and Drug Administration 2098 Gaither Road Rockville MD 20850
SEP 2 6 2008
Abbott Laboratories c/o Ms. Carol Jochum AP 6C-2, Dept. 049C 100 Abbott Park Road Abbott Park, IL 60064
| Re: | K081231 |
|---|---|
| Trade/Device Name: | ARCHITECT iPhenobarbital AssayARCHITECT iPhenobarbital Calibrators (A-F) |
| Regulation Number: | 21 CFR 862.3660 |
| Regulation Name: | Phenobarbital test system |
| Regulatory Class: | Class II |
| Product Code: | DLZ, DLJ |
| Dated: | September 9, 2008 |
| Received: | September 10, 2008 |
Dear Ms. Jochum:
We have reviewed your Scction 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 nrior 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 n your device to such additional controls. Existing major regulations affecting your device can be four o in Title 21, Code of Federal Regulations (CFR), Parts 800 to 895. 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); and good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820).
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This letter will allow you to begin marketing your device as described in your Section 510(k) premarket notification. The FDA finding of 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 information about the application of labeling requirements to your device, or questions on the promotion and advertising of your device, please contact the Office of In Vitro Diagnostic Device Evaluation and Safety at (240) 276-0490. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR Part 807.97). You may obtain other general information on your responsibilities under the Act from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or (240) 276-3150 or at its Internet address at http://www.fda.gov/cdrh/industry/support/index.html.
Sincerely yours.
Jean M. Cooper, M.S., D.V.M.
Sean M. Cooper, M.S., D.V.M. Director Division of Chemistry and Toxicology Office of In Vitro Diagnostic Device Evaluation and Safety Center for Devices and Radiological Health
Enclosure
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Indication for Use
510(k) Number (if known): KOE (23 )
Device Name: ARCHITECT iPhenobarbital
Indication for Use:
Reagents
The ARCHITECT iPhenobarbital assay is an in vitro chemiluminescent microparticle immunoassay (CMIA) for the quantitative measurement of phenobarbital, an anticonvulsant and sedative-hypnotic drug, in human serum or plasma on the ARCHITECT i System with STAT protocol capability. The measurements obtained are used in the diagnosis and treatment of phenobarbital overdose and in monitoring levels of phenobarbital to help ensure appropriate therapy.
Calibrators
The ARCHITECT iPhenobarbital Calibrators are for the calibration of the ARCHITECT i System with STAT protocol capability when used for the quantitative determination of phenobarbital in human serum or plasma.
Prescription Use X (Part 21 CFR 801 Subpart D) And/Or
Over-The-Counter Use (21 CFR 807 Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE; CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of In Vitro Diagnostic Device Evaluation and Safety (OIVD)
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Division Sign-Off Office of In Vitro Diagnostic Device Evaluation and Safety 18/23/ 510(k)
§ 862.3660 Phenobarbital test system.
(a)
Identification. A phenobarbitol test system is a device intended to measure phenobarbital, an antiepileptic and sedative-hypnotic drug, in human specimens. Measurements obtained by this device are used in the diagnosis and treatment of phenobarbital use or overdose and in monitoring levels of phenobarbital to ensure appropriate therapy.(b)
Classification. Class II.