Test Details
Mnemonic
DL
Ordering Code
3501180
CPT-4 Code(s)
83605
Specimen Information
Collect
Gray sodium fluoride/potassium oxalate
Specimen Preparation
Centrifuge, separate, and send 0.5 mL plasma in a screw capped plastic
vial. If collecting in sodium heparin tube, centrifuge within one hour.
vial. If collecting in sodium heparin tube, centrifuge within one hour.
Alternate Specimen
Plasma: Green sodium heparin
Minimum Volume
0.2 mL
Transport Temperature
Frozen
Stability
Room temperature: 91 days
Refrigerated: 91 days
Frozen: 91 days
Refrigerated: 91 days
Frozen: 91 days
Methodology
Gas Chromatography-Mass Spectrometry (GCMS) Stable Isotope Dilution Analysis
Reference Range
0.0 - 0.25 mmol/L
Performing Laboratory
Mayo Clinic Laboratories
New York DOH Approval Status
Yes