Methadone and Metabolite - Confirmation/Quantitation - Serum or Plasma : ARUP Lab Tests

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Methadone and Metabolite - Confirmation/Quantitation - Serum or Plasma : 0090699

Mnemonic: METHADO SP

Methodology:	Quantitative Liquid Chromatography-Tandem Mass Spectrometry
Performed:	Sun-Sat
Reported:	1-4 days
Specimen Required:	Collect: Gray (sodium fluoride/potassium oxalate). Also acceptable: Plain red, green (sodium heparin), lavender (EDTA), or pink (K₂EDTA). Specimen Preparation: Separate serum or plasma from cells ASAP or within 2 hours of collection. Transfer 4 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 2 mL) Storage/Transport Temperature: Refrigerated. Unacceptable Conditions: Separator tubes. Plasma or whole blood collected in lt. blue (sodium citrate). Specimens exposed to repeated freeze/thaw cycles. Stability (collection to initiation of testing): After separation from cells: Ambient: 1 week; Refrigerated: 2 weeks; Frozen: 3 years

Reference Interval: By report
Interpretive Data:	Methodology: LC-MS/MS Drugs covered: Methadone and EDDP Positive cutoff: 10 ng/mL For medical purposes only; not valid for forensic use. The absence of expected drug(s) and/or drug metabolite(s) may indicate non-compliance, inappropriate timing of specimen collection relative to drug administration, poor drug absorption, or limitations of testing. The concentration value must be greater than or equal to the cutoff to be reported as positive. Interpretive questions should be directed to the laboratory.
CPT Code(s):	83840
Cross References:	Amidone (Drugs of Abuse Confirmation/Quantitation - Methadone & Metabolite - Serum or Plasma), Dolophine (Drugs of Abuse Confirmation/Quantitation - Methadone & Metabolite - Serum or Plasma), EDDP (Drugs of Abuse Confirmation/Quantitation - Methadone & Metabolite - Serum or Plasma), Heptadon (Drugs of Abuse Confirmation/Quantitation - Methadone & Metabolite - Serum or Plasma), Methadone (Drugs of Abuse Confirmation/Quantitation - Methadone & Metabolite - Serum or Plasma), Methadose (Drugs of Abuse Confirmation/Quantitation - Methadone & Metabolite - Serum or Plasma), Pain Management (Drugs of Abuse Confirmation/Quantitation - Methadone & Metabolite - Serum or Plasma) , Physeptone (Drugs of Abuse Confirmation/Quantitation - Methadone & Metabolite - Serum or Plasma), Symoron (Drugs of Abuse Confirmation/Quantitation - Methadone & Metabolite - Serum or Plasma)

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