Method Name
Chemiluminescence
Aliases
T4, Free; FT4; Thyroxine, Free, T4 - Free
Specimen Required
one SST/gel tube
Specimen Minimum Volume
2.0 mL of blood
Specimen Stability Information
Centrifuged specimen stable for 48 hours refrigerated.
Performing Laboratory
As ordered. Turn around time is 8 hours.
Reference Values
0.76 – 1.46 ng/dL