Used for the quantitative determination of estradiol (E2) levels in canine serum, plasma, or other biological fluids. This research kit is specifically designed for use in veterinary and animal health studies to monitor reproductive status, assess ovarian function, and support breeding management in dogs. It enables researchers to investigate hormonal changes during the estrous cycle, diagnose reproductive disorders, and evaluate the effectiveness of hormonal treatments. The assay is suitable for laboratory research purposes and not intended for diagnostic use in clinical practice. High sensitivity and specificity allow for accurate measurement even at low hormone concentrations, making it a valuable tool in canine endocrinology research.