Test Details

Mnemonic

GALAC

Ordering Code

3502980

CPT-4 Code(s)

82759

Specimen Information

Collect

Lavender EDTA

Specimen Preparation

Send 4.0 mL whole blood refrigerated.

Alternate Specimen

Green top sodium heparin, yellow ACD A

Minimum Volume

2.0 mL

Transport Temperature

Refrigerated

Rejection Criteria

Gross hemolysis

Stability

Room temperature: 72 hours
Refrigerated: 10 days
Frozen: Unacceptable

Methodology

Enzyme reaction followed by Liquid Chromatography/Tandem Mass Spectrometry
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Reference Range

≥0.7 nmol/h/mg of hemoglobin
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Performing Laboratory

Mayo Clinic Laboratories
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New York DOH Approval Status

Yes
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