Used in biomedical research to quantitatively measure Human Opto-Activin (OPTC) protein levels in biological samples such as serum, plasma, and cell culture supernatants. This ELISA kit is particularly valuable in studies related to retinal function and eye diseases, as OPTC is highly expressed in the retina and associated with glaucoma and other neurodegenerative eye conditions. Researchers use this kit to investigate disease mechanisms, evaluate therapeutic responses, and identify potential biomarkers in ocular and neurological research. The assay provides high sensitivity and specificity, enabling accurate detection of OPTC concentration changes in experimental models and clinical samples.