What hormone, often measured in urine or blood, is the primary indicator used in pregnancy tests?
Show answer
Human chorionic gonadotropin (hCG)
Human chorionic gonadotropin (hCG) is produced by cells that eventually form the placenta shortly after an embryo attaches to the uterine lining. Levels of this hormone rise rapidly in early pregnancy, doubling every 48 to 72 hours.
Also asked as:
- Which hormone's presence in blood or urine serves as the primary marker for pregnancy tests?