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.

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

Methodology

Gas Chromatography-Mass Spectrometry (GCMS) Stable Isotope Dilution Analysis
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Reference Range

0.0 - 0.25 mmol/L
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Performing Laboratory

MAYO
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New York DOH Approval Status

Yes
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