Methadone Drug Level

Label Mnemonic:	METHADO
Epic code:	LAB3593
Downtime form:	Doctor/Provider Orders - Pathology Core and Specialty Care Nursery

Commercial Mailout Laboratory
6240-8 RCP
356-8593

Specimen(s):

Serum

Collection Medium:

Red top tube 5 mL (Clot Activator)

Minimum:

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:

1-7 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.

Methodology:

Quantitative Liquid Chromatography-Tandem Mass Spectrometry

CPT Code:

80358