A Pregnancy exam is a vital tool for people wanting to verify a possible pregnancy. These assessments work by detecting the existence from the hormone human chorionic gonadotropin (hCG) in urine or blood, which happens to be produced by the placenta Soon following the embryo attaches into the uterine lining. https://pregnancy-test69603.mdkblog.com/34229450/understanding-pregnancy-exams-an-extensive-tutorial