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HelpOrderable Name COKEP Cocaine and Metabolites, Plasma
Ordering Guidance
Additional drug panels and specific requests are available; call 800-533-1710.
Specimen Required
Supplies: Sarstedt Aliquot Tube, 5 mL (T914)
Collection Container/Tube: Gray top (sodium fluoride/potassium oxalate plasma) (PST are not acceptable)
Submission Container/Tube: Plastic vial
Specimen Volume: 1 mL Plasma
Collection Instructions:
1. Within 2 hours of collection, centrifuge at 4° C and aliquot plasma into a plastic vial.
2. Freeze the specimen.
Useful For
Confirming drug exposure involving stimulants such as cocaine, benzoylecgonine, m-hydroxy-benzoylecgonine, and cocaethylene
Special Instructions
Method Name
Liquid Chromatography Tandem Mass Spectrometry (LC-MS/MS)
Specimen Type
PlasmaSpecimen Minimum Volume
Plasma: 0.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Plasma | Frozen (preferred) | 28 days |
| Refrigerated | 6 days |
Reject Due To
| Gross hemolysis | OK |
| Gross lipemia | OK |
| Gross icterus | OK |
Reference Values
Negative
Positive results are reported with a quantitative result.
Cutoff concentrations:
Cocaine: 1.0 ng/mL
Benzoylecgonine: 1.0 ng/mL
Cocaethylene: 1.0 ng/mL
m-Hydroxybenzoylecgonine: 1.0 ng/mL
Day(s) Performed
Thursday
Report Available
3 to 9 daysCPT Code Information
G0480
80353 (if appropriate for select payers)