Clinical Chemistry
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Clinical Chemistry 33: 150-153, 1987;
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Clinical Chemistry, Vol 33, 150-153, Copyright © 1987 by American Association for Clinical Chemistry

Criteria for evaluating nonquantitative assays: application to serum choriogonadotropin

DM Delfert, MR Rea, G Kessler, BA Siegfried and R Valdes Jr

We present guidelines for assessing the performance of nonquantitative (qualitative) assay methods. Criteria to be evaluated include analytical sensitivity, imprecision near limits of detection, analytical specificity, accuracy over a wide range of analyte concentrations, potential interferents, and technical ease of performance. A protocol was developed to evaluate several nonquantitative assay kits for detection of human choriogonadotropin (hCG) in serum. These include Tandem Icon HCG (Hybritech), Quest Pregnancy Test (Quidel), Concep-7 beta hCG (Leeco), and Beta Quik V (Pacific Biotech). Quantitative measurement of beta-hCG by RIA (Immophase beta hCG, Corning Medical) was used as the reference method. Results of this evaluation are discussed. The guidelines established and utilized in this report are adaptable to the evaluation of assay kits that measure other analytes by qualitative techniques.




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Copyright © 1987 by the American Association for Clinical Chemistry.