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The Evidence MultiSTAT DOA Urine MultiPlex is intended for use with the Evidence MultiSTAT. The Evidence MultiSTAT is an analyzer intended for the qualitative determination of parent drug molecule and metabolites of drugs in human urine at the associated cutoffs.

The Evidence MultiSTAT DOA Urine MultiPlex detects the following drugs at the following cut-offs:

The Evidence MultiSTAT DOA Urine MultiPlex provides only a preliminary analytical test result. A more specific alternative chemical method must be used to obtain a confirmed analytical result. Gas Chromatography/Mass Spectrometry (GC/MS) and/or Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS) are the preferred confirmatory methods. Other chemical confirmation methods are available. Clinical consideration and professional judgement should be applied to any drug of abuse test result, particularly when preliminary positive results are obtained.

For in vitro diagnostic use only.

The Evidence MultiSTAT analyzer is a benchtop fully automated Biochip Array System. It performs simultaneous detection of multiple analytes from a single sample. The core technology is the Randox Biochip, a solid-state device containing an array of discrete test regions containing immobilized antibodies specific to different Drugs of Abuse (DOA) compound classes. A competitive chemiluminescent immunoassay is used for the DOA assays with the drug in the specimen and drug labelled with horseradish peroxidase (HRP) being in direct competition for the antibody binding sites. Increased levels of drug in a specimen will lead to reduced binding of drug labelled with HRP and thus a reduction in chemiluminescence being emitted. The light signal generated from each of the test regions on the biochip is detected by a Charge Coupled Device (CCD) camera in the Evidence MultiSTAT system which, together with the analyzer software, is used to quantify the light output and produce meaningful results.

The immunoassay processes are performed automatically in a self-contained and sealed biochip cartridge, which holds the biochips, the reagents, wash buffer and other fluids required for the test to be conducted.

Evidence MultiSTAT assays employ a qualitative reporting method. Each test sample is assayed against the provided Cut Off material of known concentration, which is used to determine the classification of the samples based on the comparison of the signal output.

The Evidence MultiSTAT DOA Urine MultiPlex uses Randox Biochip Technology and performs simultaneous detection of multiple analytes from a single sample, using the Evidence MultiSTAT analyzer. The assays are diagnostic tests for qualitative determination of the parent molecule and metabolites of drugs in human urine. The qualitative tests are based on a cut off value for each analyte, as detailed in the table below.

I am sorry, but the provided text focuses on the FDA's 510(k) clearance for a device (Evidence MultiSTAT DOA Urine MultiPlex) and discusses its intended use, classification, and substantial equivalence to a predicate device. It briefly mentions that "Studies were performed to evaluate performance with regards to the precision, specificity, and accuracy of the candidate devices," and concludes that the device "raises no new issues of safety and effectiveness."

However, the text does not contain the detailed information required to answer your specific questions about:

1. A table of acceptance criteria and the reported device performance.
2. Sample size used for the test set and data provenance.
3. Number and qualifications of experts for ground truth.
4. Adjudication method for the test set.
5. Multi-reader multi-case (MRMC) comparative effectiveness study, including effect size.
6. Standalone (algorithm-only) performance.
7. Type of ground truth used (expert consensus, pathology, outcomes data).
8. Sample size for the training set.
9. How the ground truth for the training set was established.

This kind of detailed performance data and study methodology is typically found in the full 510(k) submission document, which is much more extensive than the FDA clearance letter and summary provided.

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