Amphetamine Screen and Confirmation, Blood      Number 766551 CPT 80101 Synonyms Dexedrine®, Methamphetamine Test Test Includes Amphetamine; methamphetamine. Confirmation by GC/MS is automatically performed on positive samples for additional charge. Special Instructions Chain-of-custody documentation is required for samples submitted for pre-employment, random employee testing, and forensic purposes. For other applications, use the standard request form. Please mark chain-of-custody test number on the request form. Specimen Whole blood Volume 12 mL Minimum Volume 4 mL Container Two gray-top 6 mL or three gray-top 4 mL (sodium fluoride/potassium oxalate) tubes (preservative in gray-top tubes is essential for cocaine analysis) Collection Routine venipuncture. Mix blood by inversion after collection. Label tube with patient information. Seal stopper with tamper-evident tape after collection. Storage Instructions Maintain specimen at room temperature unless arrival at the laboratory will extend beyond 7 days. If arrival extends beyond 7 days, then refrigerate. Causes for Rejection Quantity not sufficient for analysis; improper specimen (serum, plasma, clotted blood); incomplete chain-of-custody documentation; incomplete specimen identification Reference Interval Detectability: 50 ng/mL Use Drugs of abuse testing Methodology Initial testing by immunoassay; confirmation of positives by gas chromatography/mass spectrometry GC/MS. See drug profiles for multidrug testing.

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