Test Details
Mnemonic
TFTLC
Ordering Code
3723600
CPT-4 Code(s)
84402, 84403
Specimen Information
Collect
Red top
Specimen Preparation
Centrifuge, remove serum from cells and send 1.8 mL serum in a screw capped plastic vial.
Alternate Specimen
Plasma: Sodium or lithium heparin
Minimum Volume
0.9 mL
Transport Temperature
Refrigerated
Rejection Criteria
Serum separator tube (SST), gross hemolysis, gross lipemia
Stability
Room temperature: 7 days
Refrigerated: 21 days
Frozen: 2 years
Refrigerated: 21 days
Frozen: 2 years
Methodology
Chromatography/Mass Spectrometry, Equilibrium Dialysis, Calculation
Reference Range
See report
Performing Laboratory
Quest
New York DOH Approval Status
Yes