Test Code FT4 Free T4

Specimen Type

Blood

Minimum Volume

1.0 mL

Container

Mint Green-Lithium Heparin
Plasma/Refrigerate

STAT Turnaround Time

45 Minutes

Routine Turnaround Time

4 Hours

Methodology

Chemiluminescent microparticle immunoassay (CMIA)

Reference Range

Healthy Adults (Male and Female) 0.7-1.5 ng/dL
Pregnant Females: 0.7-1.2 ng/dL

CPT Code

84439