An appropriate health professional or medical doctor should always be consulted if a serious condition is suspected. All the information here should not be considered as conclusive medical advice.
Related test item
|Produced by the pituitary gland to regulate the amount of T3 and T4 levels in the body.|
The T4 Concentration has been used to help diagnose hyperthyroidism and hypothyroidism. It is a useful test but can be affected by the amount
The free T4 test is a newer test that is not affected by protein levels. Since free T4 is the active form of thyroxine, the free T4
test is thought to be a more accurate reflection of thyroid hormone function. It is usually ordered along with or following a TSH test.
|Free T3||Free T3 measures the amount of T3 that is not bound to proteins and that which is useable.|