Cocaine Metabolite (Benzoylecgonine), Serum or Plasma, Quantitative COCACF
| Method(s) | Quantitative Gas Chromatography-Mass Spectrometry/Quantitative Liquid Chromatography-Tandem Mass Spectrometry |
|---|---|
| Specimen Required | |
| Collect | One 5 mL gray (sodium fluoride/potassium oxalate) top tube. Also acceptable: Plain red, green (sodium heparin), lavender (EDTA), or pink (K2EDTA) top tubes. |
| Transport | 3.5 mL serum or plasma at 2-8°C. (Min: 1.5 mL) |
| Stability | After separation from cells: Ambient: 1 week; Refrigerated: 2 weeks; Frozen: 3 years |
| Unacceptable Conditions | Separator tubes. Plasma or whole blood collected in light blue (sodium citrate) top tubes. Specimens exposed to repeated freeze/thaw cycles. |
| Schedule | Daily |
| Billing Code | 5011518 |
| CPTCode | 80353 (Alt code: G0480) |
| Preferred Specimen Collection Device(s) | |
| Reference Interval | |
|
Positive cutoff: 20 ng/mL |
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