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Clinical Chemistry 38: 1678-1684, 1992;
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Clinical Chemistry, Vol 38, 1678-1684, Copyright © 1992 by American Association for Clinical Chemistry

Simultaneous detection of seven drugs of abuse by the Triage panel for drugs of abuse

KF Buechler, S Moi, B Noar, D McGrath, J Villela, M Clancy, A Shenhav, A Colleymore, G Valkirs and T Lee
Biosite Diagnostics, Inc., San Diego, CA 92121.

This novel, competitive immunoassay simultaneously detects seven drugs of abuse in urine. A urine sample is placed in contact with lyophilized reagents, the reaction mixture is allowed to come to equilibrium (10 min), and then the whole mixture is applied to a solid phase that contains various immobilized antibodies in discrete drug-class-specific zones. After a washing step, the operator visually examines each zone for the presence of a red bar. The method incorporates present threshold concentrations that are independent for each drug. In the absence of drug or in the presence of drug in quantities less than the threshold concentration, no colored bar is visible. Samples containing drug(s) at or above the threshold concentration cause a red bar to appear for the appropriate drug(s). Positive and negative procedural control zones are incorporated into each determination. The performance of the assay methodology matches that of instrumented immunoassay systems.


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