Drugs of Abuse, Serum or Plasma - Screen with Reflex to Confirmation/Quantitation DOAP9
| Method(s) | Qualitative Enzyme-Linked Immunosorbent Assay/Quantitative Gas Chromatography-Mass Spectrometry/Quantitative Liquid Chromatography-Tandem Mass Spectrometry | ||||||||||||||||||||||||
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| Specimen Required | |||||||||||||||||||||||||
| Collect | Two 6 mL gray (potassium oxalate/sodium fluoride) top tubes. Also acceptable: plain red, green (sodium heparin), lavender (EDTA), or pink (K2EDTA) top tubes. |
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| Transport | 4 mL serum or plasma, refrigerated (Min: 3 mL) |
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| Remarks | Remove serum or plasma from cells ASAP OR within 2 hours of collection. Plasma is preferred over serum. Cocaine and cocaethylene are more stable in fluoride-preserved plasma than serum. |
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| Stability | After separation from cells: Ambient: 1 week; Refrigerated: 2 weeks; Frozen: 3 years |
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| Unacceptable Conditions | Samples exposed to repeated freeze/thaw cycles. Separator tubes and plasma or whole blood from light blue (sodium citrate) top tubes. |
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| Schedule | Daily | ||||||||||||||||||||||||
| Billing Code | 5011720 | ||||||||||||||||||||||||
| CPTCode | 80307; if positive, add appropriate CPT code(s): 80324; 80359; 80345; 80346; 80349; 80353; 80358; 80361; 80365; 80348; 83992; if positive, add appropriate CPT code(s): G0480. | ||||||||||||||||||||||||
| Notes | Screen positive specimens are automatically confirmed by GC/MS or LC-MS/MS; additional charges may apply. If specimen screens positive, then the confirmation test for the drug class will be added. | ||||||||||||||||||||||||
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