The Biotime FT3 Rapid Quantitative Test is intended to quantify the concentration of FT3 in human serum on the Biotime FIA Analyzer (Semi-automatic / Automatic) by fluorescent immunoassay. The test is used as an aid in the detection of hyperthyroidism. -Fluorescence immunoassay -hyperthyroidism For in vitro diagnostic use only. For professional use only.