T4 Total and Free
T4 (Total Thyroxine), Serum Price
There are two separate tests under T4 titled Total and Free. Both these tests evaluate how well the thyroid gland is functioning. These two tests have been the go-to test for many physicians for diagnosing Hyper and Hypothyroidism.
T4 exists in 2 forms in the blood – Bound to a protein and free. The Free T4 is available for use by the body and tissues. However, most of the T4 present in the blood is bonded to a protein. The body is able to use the free T4 and hence the free T4 test is an important test to evaluate how well your thyroid gland is functioning.
The free T4 is the active form and hence measuring this i.e. the T4 Free test is considered to be more accurate and insightful
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