Thyroxine (T4) is a hormone that is stored and synthesised in the thyroid gland. The proteolytic cleavage of follicular thyroglobulin results in the releasing T4 into the bloodstream, over 99% of thyroxine is found to be reversibly bound to at least three different plasma proteins in blood, thyroxine binding globulin (TBG), albumin or thyroxine binding pre-albumin (TBPA).

ELISA kit information:

• Reactivity: Human
• Sample Type: Serum
• Sensitivity:  8.0 nmol/l
• Target: Thyroxine, T4