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NCJRS Abstract

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NCJ Number: 140926 Find in a Library
Title: Evaluation of Enzyme Immunoassay Performance Characteristics -- Phencyclidine Example
Journal: Journal of Forensic Sciences  Volume:38  Issue:1  Dated:(January 1993)  Pages:156-164
Author(s): M J Fyfe; P Chand; C McCutchen; J S Long; A S Walia; C Edwards; R H Liu
Date Published: 1993
Page Count: 9
Type: Report (Technical)
Format: Article
Language: English
Country: United States of America
Annotation: Four reagent formulations (three provided by a manufacturer and one prepared inhouse by mixing equal volumes of two commercial reagents) were used to assay phencyclidine in urine samples.
Abstract: Certain performance characteristics were evaluated, including assay precision and sensitivity at and near the assay cutoff concentration. Sensitivity was defined as the assay response per unit analyte concentration change, or simply the slope of the dose-response plot. Data resulting from the reagent prepared inhouse were better than those using commercially available formulations and were comparable with those obtained using a relatively new commercial formulation. Samples with phencyclidine concentrations at 25 percent below or above the cutoff standard could be differentiated from the cutoff with a probability better than 97.72 percent. 8 references, 6 tables, and 2 figures
Main Term(s): Drug testing; Urinalysis
Index Term(s): Criminal investigation; Evidence identification; Forensic sciences; Poisons and poison analysis
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