INTENDED USE Diagnostic Kit for Total Triiodothyronine (fluorescence immunochromatographic assay) is a fluorescence immunochromatographic assay for the quantitative detection of Total Triiodothyronine (TT3) in human serum or plasma, which is mainly used to evaluate thyroid function.It is an auxiliary diagnosis reagent.All positive sample must be confirmed by other methodologies. This test is intended for healthcare professional use only. SUMMARY Triiodothyronine(T3) molecular weight 651D. It is the main active form of thyroid hormone. Total T3(Total T3, TT3) in the serum is divided into binding and free types. 99.5 % of TT3 binds to serum Thyroxine Binding Proteins(TBP), and free T3(Free T3) accounts for 0.2 to 0.4 %. T4 and T3 participate in maintaining and regulating the body's metabolic function.TT3 measurements are used to evaluate thyroid functional status and diagnosis of diseases. Clinical TT3 is a reliable indicator for the diagnosis and efficacy observation of hyperthyroidism and hypothyroidism.The determination of T3 is more significant for the diagnosis of hyperthyroidism than T4.