Test Details

Mnemonic

GBM

Ordering Code

3016100

CPT-4 Code(s)

83516

Specimen Information

Collect

Serum separator tube (SST)

Specimen Preparation

Centrifuge, separate serum from cells and send 1.0 mL serum refrigerated in a screw capped plastic vial.

Alternate Specimen

Lavender EDTA

Minimum Volume

0.5 mL

Transport Temperature

Refrigerated

Rejection Criteria

Heparinized plasma; hemolysis; lipemia

Stability

Room temperature: 8 hours
Refrigerated: 14 days
Frozen: Undetermined

Methodology

Fluorescence Enzyme Immunoassay (FEIA)
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Reference Range

<7 U/mL Negative
7 – 10 U/mL Equivocal
>10 U/mL Positive
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Performing Laboratory

Warde Medical Laboratory
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New York DOH Approval Status

Yes
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