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Lab Manual for UCSF Clinical Laboratories

Lab Manual for SFGH

Internal Resources


Item Value
Available Stat? Yes
Test code COCA
Performed by? Chemistry
Sendout? no
Price range $$
In House Availability 7 Days
Principle Competitive immunoassay using CEDIA technology
Interpretation CUTOFF: 300 ng/mL.

Drug Detection Period (approximate guideline) = 2-3 days.

Positive results are not confirmed because this assay has very high specificity (> 99% confirmed). Cocaine and cocaethylene have 54% and 57% cross-reactivity, respectively.
Amount to Collect 15 mL
Sample type Urine
Normal range Negative
Stability Minimum 1 week at 2-8°C
Turn around times Screening results are reported within 1 to 8 hours.
References 1. Wu AHB, Broussard LA, Hoffman RS, Kwong TC, McKay C, Moyer TP, Otten EM, Welch SL, Wax P. National Academy of Clinical Biochemistry. Laboratory Medicine Practice Guidelines. Recommendations for the Use of Laboratory Tests to Support the Impaired and Overdosed Patients from the Emergency Department. Clin Chem 2003;49:357-79.
CPT coding 80101
Last Updated 10/16/2012 7:29:33 PM
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