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Test Code UCOC Cocaine, Qualitative, Urine, LAB378

Performing Laboratory

St. Luke's Hospital Cedar Rapids

Specimen Requirements

For situations where chain-of-custody is required, a complete chain-of-custody protocol must be maintained when collecting and handling specimens.

 

Container/Tube:

Preferred: Random Urine Specimen

Specimen Volume: 0.5 mL from a random urine collection.

Stability: Specimens should be stored in the refrigerator for less than 24 hours. If need to

                 store longer than 24 hours, freeze the specimen.  Specimens should be within

                 the pH range of 5 – 8. Specimens with a pH outside this range should be adjusted

                 to this range by the addition of 1N HCl or 1N NaOH before analysis.  Specimens

                 should be at a temperature of 20 – 25°C before analysis.

 

Note: 1. A completed Chain-of-Custody Form is required when processing a chain-of-custody specimen.

           2. Presence of detergents or bleach in specimen may interfere with assay.

Reference Values

Not detected (cutoff <300 ng/mL)

Useful For

Cocaine testing is used in the diagnosis and treatment of cocaine overdose.

Day(s) Test Set Up

Monday through Sunday

Methodology

Enzymatic

Note: This is a screening test only. No confirmation will be done unless it is specifically ordered.

Test Classification and CPT Coding

80353