Test Details

Mnemonic

OSTEC

Ordering Code

3702450

CPT-4 Code(s)

83937

Specimen Information

Patient Preparation

Dietary supplements containing biotin may interfere in assays and may skew results to be
either falsely high or falsely low. For patients receiving the recommeded daily doses of biotin,
draw samples at least 8 hours following the last biotin supplementation. For patients on megadoses of biotin supplements, draw samples at least 72 hours following the last biotin
supplementation.

Collect

Red top

Specimen Preparation

Allow blood to clot at room temperature, spin and separate serum from cells within 2 hours and freeze. Send 1.0 mL serum in a screw capped plastic vial. CRITICAL FROZEN.

Alternate Specimen

Plasma: EDTA

Minimum Volume

0.5 mL

Transport Temperature

Critical Frozen

Rejection Criteria

Hemolysis, heat inactivated samples, serum separator tube (SST), specimens stabilized with azide,
patient administered with biotin within 8 hours

Stability

Room temperature: Unacceptable
Refrigerated: 24 hours
Frozen: 21 days

Methodology

Electrochemiluminescence Immuoassay (ECLIA)
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Reference Range

See report
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Performing Laboratory

Quest SJC
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