All legitimate pregnancy tests work in the same way: by detecting the pregnancy hormone called human chorionic gonadotropin (hCG). There are two main ways you can take pregnancy tests: DIY methods ...

Home pregnancy tests work by picking up the presence of human Chorionic Gonadotropin (hCG) in your urine. (This is a hormone your body starts producing very early in pregnancy.) If you have hCG in ...

Most pregnancy tests on the market only work properly if you take them a week or more after missing your period, says Cara Delaney, MD, a gynecologist and instructor at the Boston University ...

genetic tests to determine whether you are at a high risk of certain diseases, and pregnancy tests. In the mid-1970s, the first at-home pregnancy test kits were developed by Margaret M.