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.
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
Refrigerated: 7 days
Frozen: 28 days
Methodology
Equilibrium Dialysis, Chromatography/Mass Spectrometry, Chemiluminescence (CL)
Reference Range
See report
Performing Laboratory
Quest SJC
New York DOH Approval Status
Yes