Which hormone is detected by pregnancy tests?

hCG

The correct answer is Option (3) → hCG

Pregnancy tests look for a special hormone —human chorionic gonadotropin (HCG) — that only develops in a woman’s body during pregnancy. These tests can use either your pee or blood to look for HCG. At-home pregnancy tests that use your pee are the most common type. When used correctly, home pregnancy tests are 99% accurate. A pregnancy test is a way to determine if you’re pregnant. If your pregnancy test is positive, it means you’re pregnant. If the test is negative, it means you aren’t pregnant. Pregnancy tests work by detecting human chorionic gonadotropin (HCG), a hormone your body makes when you’re pregnant.