The reagent is used to detect the HCG in urine qualitatively according to the principle of double antibody sandwich method. Human chorionic gonadotropin (HCG) is a glycoprotein hormone produced by the developing placenta shortly after fertilization, including protein subunits of α and β. Its function is to stimulate the corpus luteum to continue producing progesterone, to maintain the endometrium suitable for embryo attachment and embryo implantation. In normal pregnancy, HCG can be produced as early as 4 to 5 days after conception, HCG levels continue to rise very rapidly until delivery, peaking in about 8-10 weeks into pregnancy, and fall to normal level 2 weeks after the delivery.
PRINCIPLE
The One Step HCG Pregnancy Rapid Test Kit is a rapid chromatographic immunoassay for the qualitative detection of human chorionic gonadotropin (HCG) in urine to aid in the early detection of pregnancy. The test utilizes antibodies including a monoclonal HCG-β antibody and goat anti-mouse IgG on the nitrocellulose membrane with colloidal gold marked anti-HCG-α monoclonal antibody as an mark tracer. The reagent is used to detect the HCG in urine according to the principle of double antibody sandwich method and gold immunochromatography assay. There is a control line (C) controlling the reaction process shown on the coated film. Based on test line's (T) appearance to determine whether the tested sample contains HCG (Human Chorionic Gonadotrophin) or not.