Used in research settings to measure free testosterone levels in human biological samples, this ELISA kit enables accurate quantification of the unbound, biologically active form of testosterone. It is commonly applied in endocrinology studies to investigate hormonal imbalances, reproductive health, and conditions such as hypogonadism, infertility, and polycystic ovary syndrome (PCOS). The kit supports high-throughput screening and clinical research by providing a sensitive and specific method to assess free testosterone without interference from binding proteins. It is not intended for diagnostic use but serves as a vital tool in biomedical research and drug development.