Test Details
Mnemonic
METHX
Ordering Code
3504930
CPT-4 Code(s)
80339 (G0480)
Specimen Information
Collect
Red top
Specimen Preparation
Centrifuge and remove serum from cells within 2 hours of collection. Send 1.0 mL serum in a screw capped plastic vial.
Alternate Specimen
Plasma: Lavender EDTA
Minimum Volume
0.3 mL
Transport Temperature
Refrigerated
Rejection Criteria
Serum sepator tube (SST), Plasma separator tube (PST)
Stability
Room temperature: 7 days
Refrigerated: 30 days
Frozen: 18 months
Refrigerated: 30 days
Frozen: 18 months
Methodology
High Performance Liquid Chromatography/Tandem Mass Spectrometry
Reference Range
See report
Performing Laboratory
NMS Labs
New York DOH Approval Status
Yes