The Canine Relaxin Test Kit is a reliable tool for early pregnancy detection in dogs. Relaxin, a hormone produced by the developing placenta after embryo implantation, can be detected in the blood as early as 22–27 days post-breeding. Using advanced fluorescence quantitative immunochromatography, this test accurately measures relaxin levels in canine serum or plasma. Relaxin remains elevated throughout pregnancy and drops rapidly after it ends, making it a dependable indicator. Ideal for breeders and veterinarians, this test offers a quick, non-invasive method to confirm pregnancy and support reproductive management.