Methadone and Metabolite, Serum or Plasma, Quantitative METHDN

Method(s) Liquid Chromatography - Tandem Mass Spectrometry
Specimen Required
Collect

Two 6 mL plain red top tubes or one gray (sodium fluoride/potassium oxalate) top tube. Also acceptable: green (sodium heparin), lavender (EDTA), or pink (K2EDTA) top tubes.

Transport 1 mL serum or plasma at 20-25ºC. (Min: 0.5 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 top (sodium citrate) tubes. Specimens exposed to repeated freeze/thaw cycles.

Schedule Mon-Fri
Billing Code 5011536
CPTCode 80358 (Alt code: G0480)
Preferred Specimen Collection Device(s)
Reference Interval

Positive cutoff: 10 ng/mL

No Appointment Necessary
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11 Patient Service Centers in Central New York.

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