- Last Update On : 2013-02-02
T3 uptake is viagra sample india an indirect measure of the quantity of thyroxine binding proteins (thyroid binding prealbumin, albumin, and TBG) in plasma. It is directly proportional to the degree of saturation of the binding proteins by thyroxine. T3U is decreased during pregnancy, with supra-normal doses of estrogen, early in acute hepatitis, and with genetic TBG excess. It is increased by anabolic hormones and generic viagra cheapest glucocorticoids, the nephrotic syndrome, and genetic TBG deficiency. T3U is not useful alone but should be combined with T4 to calculate the FTI (also called T7).
Reference range is 22-37%.
Specimen requirement is one SST tube of blood.