Lab Testing
T4, Free
Labcorp
SKU: 001974
$46.00
Product Description
**Note: All laboratory testing requires an authorizing physician. DHA Laboratory offers a patient direct program that partners you with an authorizing physician. If you have any additional questions regarding the availability of testing, please contact our laboratory by telephone or email.**
This test is used when Free T4 may be indicated when TBG (thyroxine-binding globulin) problems are suspected. It can also be used to diagnose thyroid disease and screen for hypothyroidism in newborns.
Patient Preparation: Discontinue any supplements containing Biotin for 72 hours prior to specimen collection.
Shipping Instructions