A pregnancy test is a device used to determine whether a woman is pregnant. Pregnancy tests work by detecting the presence of human chorionic gonadotropin (hCG) in the urine or blood. hCG is a hormone that is produced by the placenta during pregnancy.
Pregnancy tests are available over-the-counter and can be used at home. They are typically very accurate, but it is important to read and follow the instructions carefully. If you get a positive result on a pregnancy test, it is important to see a doctor to confirm the pregnancy and to rule out any other possible causes of the positive result.