Pregnancy testing is a process used to determine whether a woman is pregnant. The most common pregnancy tests detect the presence of human chorionic gonadotropin (hCG), a hormone produced by the placenta after a fertilized egg implants in the uterine lining. Pregnancy tests can be done at home or in a healthcare setting and include urine and blood tests. 1. Types of Pregnancy Tests A. Urine Pregnancy Tests Home Pregnancy Tests (HPTs): These are over-the-counter tests that can be done at home and are widely available in pharmacies and stores. They work by detecting hCG in urine. Most HPTs claim to be accurate starting from the first day of a missed period (about two weeks after conception), but sensitivity varies between brands. The test usually involves placing the test stick in the urine stream or dipping it into a cup of collected urine. After a few minutes, results appear as lines, symbols (like a plus sign), or the words "pregnant" or "not pregnant." Accuracy: If done correctly, home pregnancy tests are about 99% accurate, but false negatives can occur if taken too early or improperly. Urine Pregnancy Test at the Doctor’s Office: Similar to HPTs but performed under medical supervision. The healthcare provider may use a more sensitive test to confirm pregnancy. B. Blood Pregnancy Tests Quantitative Blood Test (Beta-hCG Test): This test measures the exact amount of hCG in the blood. It can detect pregnancy earlier than urine tests (about 6–8 days after ovulation), making it useful for early detection or when an ectopic pregnancy is suspected. It also helps monitor pregnancy progression by showing whether hCG levels are rising appropriately, especially in cases of suspected miscarriage or after fertility treatments like IVF. Qualitative Blood Test: This test simply checks if hCG is present or not, indicating whether you are pregnant, without providing exact levels. Similar to a urine test but done through a blood sample and can detect pregnancy a bit earlier than home tests.