The T3 uptake test must be performed alongside a total T4 test in order to calculate free T4, also called the free T4 index. A high free T4 index may indicate hyperthyroidism while low levels may point to hypothyroidism [2]. The T3 uptake test requires a blood sample, which a medical ...
which in turn is also regulated by the hypothalamus's TSH Releasing Hormone (TRH). Now, it is possible to measure circulating hormones in the blood very accurately in order to know what thyroid test or tests are needed to diagnose different disorders....
which in turn is also regulated by the hypothalamus's TSH Releasing Hormone (TRH). Now, it is possible to measure circulating hormones in the blood very accurately in order to know what thyroid test or tests are needed to diagnose different disorders....