Test Details

Mnemonic

RT3

Ordering Code

3426700

CPT-4 Code(s)

84482

Specimen Information

Collect

Red top

Specimen Preparation

Centrifuge, separate serum from cells within 2 hours of collection and send 1.0 mL serum in a screw capped plastic vial.

Minimum Volume

0.5 mL

Transport Temperature

Refrigerated

Rejection Criteria

Serum separator tube (SST), Grossly lipemic or hemolyzed samples, plasma

Stability

Room temperature: Unacceptable
Refrigerated: 7 days
Frozen: 3 months

Methodology

Liquid Chromatography/Tandem Mass Spectrometry
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Reference Range

≥18 years: 9.0-27.0 ng/dL
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Performing Laboratory

Warde Medical Laboratory
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