METHADONE, QUANTITATIVE, SERUM
Specimen Collection Requirements
Serum or Plasma, one 7.0 mL red, 4.0 mL dark green (sodium heparin) or 4.0 mL Lavender (EDTA) top tube
Allow specimen to clot completely at room temperature (minimum: 30 minutes). Centrifuge and separate serum from cells ASAP.
Serum that has been in contact with serum separator gel
Ambient (20-25°C): 1 week; Refrigerated (2-8°C): 1 month; Frozen (at or below -20°C): 3 months
Interpretation: Reported therapeutic and toxic serum Methadone levels have significant overlap.
Friday, February 10, 2017 10:56:09 AM
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