Test Details

Mnemonic

FT3

Ordering Code

1010900

CPT-4 Code(s)

84481

Specimen Information

Collect

SST
more

Specimen Preparation

Centrifuge, separate serum from cells and send 1.0 mL serum refrigerated in a screw-capped plastic vial.
more

Alternate Specimen

Serum: Red-top
more

Minimum Volume

0.5 mL
more

Transport Temperature

Refrigerated
more

Rejection Criteria

Grossly hemolyzed or grossly lipemic specimens, plasma
more

Stability

Room temperature; 8 hours
Refrigerated: 72 hours
Frozen: 14 days
more

Methodology

Chemiluminescence
more

Reference Range

Age Reference range
1 - 23 months 3.3 - 5.2 pg/mL
24 months (2 Years) - 12 years 3.3 - 4.8 pg/mL
13 years - 20 years 3.0 - 4.7 pg/mL
21 years and above 2.3 - 4.2 pg/mL
more

Performing Laboratory

Warde Medical Laboratory
more