Methadone Drug Level
Label Mnemonic: METHADO
Epic Lab Code: LAB3593
Downtime Form: A-1a Doctor/Provider Orders - Pathology Core and Specialty Care Nursery
Commercial Mail-out Laboratory
5231 RCP
Collection Medium:
Red top tube 5 mL (Clot Activator)
Preferred Minimum: 1 mL serum
Absolute Minimum: 0.5 mL serum
Does not allow for sample repeat at reference laboratory if necessary.
Rejection Criteria:
Separator tubes. Plasma or whole blood collected in lt. blue (sodium citrate). Specimens exposed to repeated freeze/thaw cycles.
Delivery Instructions:
Deliver to laboratory within 1 hour of collection.
Turn Around Time:
1-4 days upon receipt at reference laboratory.
Reference Range:
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.
Quantitative Liquid Chromatography-Tandem Mass Spectrometry
CPT Code: