Free Thyroxine (FT3) Test Kit

This assay is intended for the quantitative determination of Free Triiodothyronine in human serum and plasma.

【Parameter】

【Technology highlight】

Chemiluminescence Reasonance Energy Transfer (CRET) Principle

【Intended Use】

The thyroid hormones triiodothyronine (T3) and thyroxine (T4) are secreted into the bloodstream by the thyroid gland and play a vital role in regulating the body's metabolic rate, influencing the cardiovascular system, growth and bone metabolism, and are important for normal development of gonadal functions and nervous system.

T3 circulates in the bloodstream as an equilibrium mixture of free and serum bound hormone. Free T3 (fT3) is the unbound and biologically active form, which represents only 0.2-0.4 % of the total T3. The remaining T3 is inactive and bound to serum proteins, while the distribution of T3 between these binding proteins (thyroxine binding globulin, pre-albumin, albumin) is controversially discussed.

The determination of free T3 has the advantage of being independent of changes in the concentrations and binding properties of the binding proteins; additional determination of a binding parameter (T-uptake, TBG) is therefore unnecessary. Therefore free T3 is a useful tool in clinical routine diagnostics for the assessment of the thyroid status. Free T3 measurements support the differential diagnosis of thyroid disorders, are needed to distinguish different forms of hyperthyroidism, and to identify patients with T3 thyrotoxicosis.

【Advantage】

Low transport costs, no cold chain required.

Single packaging to avoid wasting reagents.

Long shelf-life of reagents, breaking through industry challenges.

【Principle】

Competition principle.

The Free Triiodothyronine (FT3) test kit employs a wash-free and homogeneous strategy based on proximity hybridization-regulated CRET(Chemiluminescence resonance energy transfer).

【Main Components】

10/20/25 Lyophilization sphere reagents

【Storage Conditions and Expiration Date】

Free Triiodothyronine (FT3) test kit can be stably stored for 18 months at 2-8℃ and protected from light. Apply reagent immediately after opening.

【Applicable Instruments】

Free Triiodothyronine (FT3) test kit used for Chemiluminescence Immunoassay Analyzer (HSCL-5000) produced by Nanjing Poclight Biotechnology Co. Ltd.

【Display】

【Application Scenario】