(94 days)
ARCHITECT STAT MYOGLOBIN is a Chemiluminescent Microparticle Immunoassay (CMIA) for the quantitative determination of Myoglobin in human serum and plasma on the ARCHITECT i System with STAT protocol capability. Myoglobin values are used to assist in the diagnosis of myocardial infarction (MI).
The ARCHITECT STAT MYOGLIBIN Calibrators are for the calibration of the ARCHITECT i System with STAT protocol capability when used for the quantitative determination of myoglobin in human serum or plasma.
The ARCHITECT® STAT Myoglobin assay is a two-step immunoassay for the quantitative determination of myoglobin in human serum and plasma using CMA technology with flexible assay protocols, referred to as Chemiflex®. In the first step, sample and anti-myoglobin coated paramagnetic microparticles are combined and incubated. Myoglobin present in the sample binds to the anti-myoglobin coated microparticles. After washing, antimyoglobin acridinium labeled conjugate is added in the second step. Following another incubation and wash, pre-trigger and trigger solutions are added to the reaction mixture. The resulting chemiluminescent reaction is measured as relative light units (RLUs). A direct relationship exists between the amount of myoglobin in the sample and the RLUs detected by the ARCHITECT® I* system optics.
Here's a summary of the acceptance criteria and study information for the ARCHITECT® STAT MYO immunoassay, based on the provided text:
1. Table of Acceptance Criteria and Reported Device Performance
The provided text (K042924) is a 510(k) summary for a diagnostic device. In this type of submission, specific numerical acceptance criteria for performance metrics are often compared against the predicate device rather than against predefined, distinct "acceptance criteria" for the new device as would be seen in a clinical trial protocol. The primary goal is to demonstrate "substantial equivalence" to a legally marketed predicate device.
Therefore, the "acceptance criteria" are implied by the performance of the predicate device (Abbott AxSYM® MYO Assay, K983848), and the "reported device performance" demonstrates that the new device is substantially equivalent to that predicate. Explicit numerical acceptance criteria are not detailed in this summary, but rather the conclusion of substantial equivalence in key performance areas.
| Performance Characteristic | Acceptance Criteria (Implied by Predicate) | Reported Device Performance |
|---|---|---|
| Precision | Performance comparable to Abbott AxSYM® MYO Assay | Substantially equivalent to Abbott AxSYM® MYO Assay |
| Linearity | Performance comparable to Abbott AxSYM® MYO Assay | Substantially equivalent to Abbott AxSYM® MYO Assay |
| Interferences | Performance comparable to Abbott AxSYM® MYO Assay | Substantially equivalent to Abbott AxSYM® MYO Assay |
| Stability | Performance comparable to Abbott AxSYM® MYO Assay | Substantially equivalent to Abbott AxSYM® MYO Assay |
| Method Comparison (Clinical Equivalence) | Agreement with Abbott AxSYM® MYO Assay demonstrating substantial equivalence | Demonstrated substantial equivalence with AxSYM® MYO assay |
| Sample Stability | No systematic gain or loss of MYO detectability under evaluated storage conditions | No systematic gain or loss of MYO detectability under evaluated storage conditions for Lithium Heparin and Serum Separator tubes |
2. Sample Size Used for the Test Set and Data Provenance
The provided text does not specify the exact sample size for the clinical method comparison study. It only states that a "method comparison using the CLSI EP-9A (EP-9A) was also conducted with the ARCHITECT® STAT MYO and AxSYM® MYO assays."
- Sample Size: Not explicitly stated. CLSI EP-9A provides guidance on method comparison studies, which typically involve a reasonable number of patient samples to demonstrate correlation.
- Data Provenance: Not explicitly stated (e.g., country of origin). The study appears to be a retrospective or prospective laboratory comparison of samples on two different devices. Given the context of a 510(k) in the US, it's likely the data was generated in a US-based laboratory, but this is not confirmed. It's an analytical and clinical comparison study, not a population-based study in terms of provenance.
3. Number of Experts Used to Establish the Ground Truth for the Test Set and Qualifications of Those Experts
The concept of "experts" to establish ground truth in the traditional sense (e.g., radiologists interpreting images) is not applicable here. This is an immunoassay for a biomarker (myoglobin). The "ground truth" for the test set is established by the results from the predicate device (Abbott AxSYM® MYO Assay), which is already legally marketed and established. The study's purpose is to show agreement between the new device and the predicate device's measurements. There are no "experts" involved in determining the "truth" of the myoglobin levels other than the performance of the predicate method itself.
4. Adjudication Method for the Test Set
Not applicable. As described above, the "ground truth" is primarily based on the predicate device's measurements. There is no independent panel or expert adjudication process described for the myoglobin values themselves. The adjudication, if any, would be in the statistical analysis and clinical interpretation of the comparison results by regulatory reviewers.
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
Not applicable. This device is an in vitro diagnostic immunoassay for a biomarker. It is not an imaging AI device that involves human readers or their improvement with AI assistance.
6. If a Standalone (i.e., algorithm only without human-in-the-loop performance) Was Done
This device is a standalone algorithm (an immunoassay performed by an automated instrument). Its performance is evaluated analytically and in comparison to a predicate device, without a human "in-the-loop" influencing the immediate result generation for a single test. The "human-in-the-loop" aspect comes in the clinician's interpretation of the measured myoglobin level in conjunction with other clinical data. The summary describes the standalone analytical performance of the ARCHITECT® STAT MYO immunoassay.
7. The Type of Ground Truth Used (Expert Consensus, Pathology, Outcomes Data, etc.)
The primary "ground truth" for this comparative study is the measurements obtained from the legally marketed predicate device (Abbott AxSYM® MYO Assay). The new device's performance is compared against these established measurements to demonstrate substantial equivalence, rather than against an independent physiological "ground truth" like pathology or clinical outcomes. The clinical utility is framed in terms of its ability to measure myoglobin, which is then used by clinicians for diagnosis, but the study itself focuses on equivalence to an existing method.
8. The Sample Size for the Training Set
Not applicable. This is not an AI/ML device that requires a "training set." It is an immunoassay based on chemical and biological reactions. The development of such assays involves optimization and validation, but not in the sense of an "AI training set."
9. How the Ground Truth for the Training Set Was Established
Not applicable, as there is no "training set" in the AI/ML sense for this type of device. The development and calibration of the assay would involve various analytical methods to ensure accuracy and precision, but this is distinct from establishing "ground truth" for an AI model.
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JAN 2 4 2005
7.3 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.
Applicant Name:
Josefina Infantas, MSM Sr. Regulatory Affairs Specialist Fisher Diagnostics 8365 Valley Pike P.O. Box 307 Middletown, VA 22645 Phone: 540-974.1082 Fax: 973.257.2611
Establishment Registration Number: 1181121
ldentification of Device:
Device Name: ARCHITECT® STAT MYO immunoassay Proprietary/Trade Name: ARCHITECT® STAT MYO immunoassay Common Name: MYO test system Device Classification: Class II Governing Regulation: 21 CFR 866.5680 FDA Panel: Clinical Chemistry Product Code: MVE
Identification of Predicate Device:
Abbott AxSYM® MYO Assay (K983848)
Intended Use of the Device:
ARCHITECT® STAT MYO is a Chemiluminescent Microparticle Immunoassay (CMIA) for the quantitative determination of MYO in human serim and plasma on the ARCHITECT® i System with STAT protocol capability.
Description of the Device:
The ARCHITECT® STAT Myoglobin assay is a two-step immunoassay for the quantitative determination of myoglobin in human serum and plasma using CMA technology with flexible assay protocols, referred to as Chemiflex®. In the first step, sample and anti-myoglobin coated paramagnetic microparticles are combined and incubated. Myoglobin present in the sample binds to the anti-myoglobin coated microparticles. After washing, antimyoglobin acridinium labeled conjugate is added in the second step. Following another incubation and wash, pre-trigger and trigger solutions are added to the reaction mixture. The resulting chemiluminescent reaction is measured as relative light units (RLUs). A direct relationship exists between the amount of myoglobin in the sample and the RLUs detected by the ARCHITECT® I* system optics.
- i = immunoassay
T = Immunoadsorbent
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COMPARISON OF TECHNOLOGICAL CHARACTERISTICS: 7.4
The ARCHITECT® STAT MYO and the AxSYM® MYO assays use a microparticle man The ARCHITECT - STAT MTO and and myoglobin (MYO) in human serum or plasma. Anti-microbial agent is used as a presentative for all reagent Serum or plasma. "Anti-microbial" agent "is "assure MYO assay as well as the Both assays have microparticles coated with mouse i ARCHITECT® STAT MYO. monoclonal anti-MYO in TRIS buffer.
Myoglobin is a tightly folded, globular heme-protein located in the cytoplasm of both Myoglobin is a tightly foldod, grobular netio is to store and supply oxygen to muscle The skeetar and cardiac moscie coller to approximately 17,800 daltons."4 The cells. The Tholecular weight of Thyogrooming of storage accounts for the rapid release from damaged muscle cells and ener rises in concentration measured above baseline in blood as compared to other cardiac markers.13.4
In blood as compared to other ourside manceres and infarction (MI), a temporal pattern of in Tischemic Treat Tulogos, Saun athe blood stream is observed. The serum or plasma increased in level will start to show an increase between 2-4 hours after an M1 has myoglobili lever will otal to ately 8-10 hours, and returning to baseline after 24 hours. occurred, peaking at approximated 2-12 hours after an MI can be a good adjunct to Measurement of Thyogoolir Between 2 12 from and early diagnosis of MM. 158 electrocardiography (1507 m therapy.6,7
therapy.
Since myoglobin is present in both cardiac and skeletal muscle, any damage to either of Since myoglobin is proom in belease into the blood stream. Elevated serum levels of these thasse types robations in the following conditions: skeletal muscle damage, Myoglobin have been oboorrou diacolisorders, cardiac bypass surgery, renal failure, strenuous exercise. 2,5,8
stichaous exeralo.
Therefore, serum myoglobin levels should be used in conjunction with other aspects of Therefore, Seram inyoglobin to the diagnosis of an Mi. Myoglobin may also rise the patiers above the reference range in chronic ischemic heart disease (i.e. unstable moderalely above the foremoses, the ARCHITECT® STAT Myoglobin assay results angina). Tor alaghoodio parpossyith other data; e.g., other clinical testing, ECG, symptoms, clinical observations. 8.
SUMMARY OF NON-CLINICAL PERFORMANCE: 7.5
The ARCHITECT® STAT MYO assay is substantially equivalent to the Abbott AxSYM® MYO assay in terms of precision, linearity, interferences, and stability as demonstrated in non-clinical performance data in this 510(k) submission.
SUMMARY OF CLINICAL PERFORMANCE: 7.6
The ARCHITECT® STAT MYO assay demonstrated substantially equivalent to the AxSYM® MYQ assay. The sample stability study evaluated ARCHITECT® STAT MYO assay using Lithium Heparin and Serum Separator collection tubes. There was no systematic gain or loss of the detectability of MYO in serum or plasma samples under any of the storage conditions evaluated in this study. A method comparison using the any of the storage vonditions evaluate (EP-9A) was also conducted with the ARCHITECT®
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ARCHITECT® STAT MYO Assay Oct. 20, 2004
STAT MYO and AxSYM® MYO assays and as a result, the two systems demonstrated substantial equivalence as indicated by clinical data in this 510(k) submission.
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DEPARTMENT OF HEALTH & HUMAN SERVICES
Image /page/3/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo features a stylized eagle with three bars representing the department's mission. The text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" is arranged in a circular pattern around the eagle.
JAN 2 4 2005
Food and Drug Administration 2098 Gaither Road Rockville MD 20850
Ms. Josefina Infantas Sr. Regulatory Affairs Specialist Fisher Diagnostics 8365 Valley Pike PO Box 307 Middletown, VA. 22645
Re: K042924
Trade/Device Name: ARCHITECT®STAT Myoglobin Immunoassay Regulation Number: 21 CFR 866.5680 Regulation Name: Myoglobin immunological test system Regulatory Class: Class II Product Code: DDR, JIS Dated: December 22, 2004 Received: January 3, 2005
Dear Ms. Infantas:
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 for are world 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 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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Page 2 -
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)276-0484. 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 (301) 443-6597 or at its Internet address http://www.fda.gov/cdrh/industry/support/index.html
Sincerely yours,
Carol Benson fer
Jean M. Cooper, MS. 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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Indications for Use
| 510(k) Number: | K042924 |
|---|---|
| Device Name: | ARCHITECT® STAT Myoglobin Immunoassay |
| Indications For Use: | ARCHITECT STAT MYOGLOBIN is a Chemiluminescent Microparticle Immunoassay (CMIA) for the quantitative determination of Myoglobin in human serum and plasma on the ARCHITECT i System with STAT protocol capability. Myoglobin values are used to assist in the diagnosis of myocardial infarction (MI).The ARCHITECT STAT MYOGLIBIN Calibrators are for the calibration of the ARCHITECT i System with STAT protocol capability when used for the quantitative determination of myoglobin in human serum or plasma. |
Over-The-Counter Use Prescription Use × ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------(21 CFR 807 Subpart C) (Part 21 CFR 801 Subpart D) (PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE OF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
Carol C. Benson
Division Sign-Off
Offro e la vitro Diagnostic Date a Lychuation and Safety
5100: K042924
§ 866.5680 Myoglobin immunological test system.
(a)
Identification. A myoglobin immunological test system is a device that consists of the reagents used to measure by immunochemical techniques the myoglobin (an oxygen storage protein found in muscle) in serum and other body fluids. Measurement of myoglobin aids in the rapid diagnosis of heart or renal disease.(b)
Classification. Class II (performance standards).