Free Thyroxine(FT4)Rapid Quantitative Test Kit (Immunofluorescence Assay) Intended Use The intended use of measuring Free Thyroxine (FT4) is to evaluate thyroid function and diagnose thyroid disorders. FT4 levels help identify conditions like hyperthyroidism and hypothyroidism, guiding treatment decisions. About FT4 Free Thyroxine (FT4) is an unbound and active form of the thyroid hormone thyroxine, crucial for regulating metabolism, energy production, and overall growth. Unlike total thyroxine, FT4 measures the hormone not attached to proteins, providing a clearer picture of thyroid function. It's essential for diagnosing and monitoring thyroid disorders, such as hyperthyroidism and hypothyroidism.Product Information Methodological Immunofluorescence Sample Type Serum/peripheral blood Sample Volume 100 μL Testing Time 10 min CV <10% Linear Range 6.40-77.20 pmol/L Clinical comparison