Pregnancy tests are used to detect the presence of human chorionic gonadotropin (hCG) in urine or blood. hCG is a hormone produced by the placenta during pregnancy. Pregnancy tests can be purchased over the counter at most pharmacies and are typically very accurate.
There are two main types of pregnancy tests: urine tests and blood tests. Urine tests are the most common type of pregnancy test and can be done at home. Blood tests are more sensitive than urine tests and can be used to detect pregnancy earlier.