METHADONE, SERUM, QUANTITATIVE

Test Documentation
Specimen Required
Draw blood in a plain red-top tube. Centrifuge, separate and send 2.0 mL serum (1.0 mL minimum) refrigerated in a screw-capped plastic vial.

Rejection Criteria
SST

Methodology
High Performance Liquid Chromatography

Stability
Room Temperature: 48 hours; Refrigerated: 14 days; Frozen: 14 days

Reference Range
Therapeutic:
   100–400 ng/mL (analgesic)  
   100–1000 ng/mL (addict therapy)  
Toxic: >2000 ng/mL

Performed
Monday-Friday

Turnaround Time1-3 days
Test CodeMETHD
CPT-4 Code (s)
80358 (G0480)

Warde
Medical
Laboratory