This test is used as a complementary study when evaualting thyroid function.
Free T4 may be indicated when binding globulin (TBG) problems are perceived, or when conventional test results seem inconsistent with clinical observations. It is normal in subjects with high thyroxine-binding globulin hormone binding who are euthyroid (ie, free thyroxine should be normal in nonthyroidal diseases). It should be normal in familial dysalbuminemic hyperthyroxinemia.
Diagnosing and monitoring treatment of hypo/hyperthyroidism.
No special preparation is necessary prior to blood sample collection.
T4, Free, Direct, Serum – TC – 35167
Estimated Turn Around For Results:
2-10 Business Days
For an exact turnaround time for results, please contact us at Personalabs and we will contact the lab on your behalf as turnaround times vary depending on testing location or lab testing provider.
We make it super easy to order your own blood work online. Watch a short video and see how it works.
The Reverse T3 test can be used to evaluate individuals with low T3, and to evaluate metabolism and thyroid function. Order this test online today through Personalabs.
Testing for Iodine levels