Test Details

Mnemonic

T4FDT

Ordering Code

3400847

CPT-4 Code(s)

84439, 84436

Specimen Information

Patient Preparation

Fasting prior to collection is preferred.

Collect

Serum separator tube (SST)

Specimen Preparation

Centrifuge, separate serum from cells and send 2.0 mL serum in a screw
capped plastic vial.

Alternate Specimen

Serum: Red top

Minimum Volume

1.0 mL

Transport Temperature

Refrigerated

Rejection Criteria

Lipemia, heparin plasma, EDTA plasma

Stability

Room temperature: 4 days
Refrigerated: 7 days
Frozen: 28 days

Methodology

Equilibrium Dialysis, Chromatography/Mass Spectrometry, Chemiluminescence (CL)
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Reference Range

See report
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Performing Laboratory

Quest
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New York DOH Approval Status

Yes
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