T4 Free (FT4):
Coupon Codes not valid for this testing.
Fasting Required: No
Lab: Quest Diagnostics
Specimen: Blood
Results: Average processing time 2-3 days
Note: Result turnaround times are an estimate and are not guaranteed. Our reference lab may need additional time due to weather, holidays, confirmation/repeat testing, or equipment maintenance.
Description: Thyroxine T4 (Free) This test is used to evaluate thyroid function in individuals who may have protein abnormalities that could affect total T4 levels. It is used to evaluate thyroid function and monitor replacement and suppressive therapy.
Alternative Name(s): FT4, Thyroxine (T4) Free
Fasting Required: No
Lab: Quest Diagnostics
Specimen: Blood
Results: Average processing time 2-3 days
Note: Result turnaround times are an estimate and are not guaranteed. Our reference lab may need additional time due to weather, holidays, confirmation/repeat testing, or equipment maintenance.
Description: Thyroxine T4 (Free) This test is used to evaluate thyroid function in individuals who may have protein abnormalities that could affect total T4 levels. It is used to evaluate thyroid function and monitor replacement and suppressive therapy.
Alternative Name(s): FT4, Thyroxine (T4) Free