The BiotimeTSH/FT3/FT4Rapid Quantitative Test is intended to quantitatively detect the concentration of thyroid-stimulating hormone (TSH), free triiodothyronine (FT3), and free thyroxine (FT4) in human serum and plasma samples on the Biotime FIA Analyzer by fluorescent immunoassay. The test is used as an adjunctive diagnosis of thyroid function. For in vitro diagnostic use only. For professional use only.