Question

Home pregnancy tests utilize ELISA technology. When a woman is pregnant, her body produces a hormone called human chorionic gonadotropin (HCG). Explain how antibodies are used to detect this hormone and are linked to a color change a woman may see on a positive test.

Answer 1

ELISA is used to detect the hormone called as Human Chorionic Gonadotropin (HCG), in the urine. HCG is present if the egg has planted onto the uterus, after fertilisation. The monoclonal antibodies in the test kit are specific to the HCG ans when they sense HCG, a color chnage is observed, and you get the result.