In Vitro Fertilization (IVF)
Confirmation of pregnancy
Twelve days after embryo transfer, the presence of human chorionic gonadotropin (β-hCG), the pregnancy hormone, is tested in the blood. If the test is positive, it is repeated after 2-3 days. The increase of the initial value of this hormone confirms the smooth progression of the pregnancy. Fifteen days after the positive pregnancy test, a transvaginal ultrasound is performed that confirms the clinical gestation. The endometrial pregnancy is ascertained, as well as the number of gestational sacs, the presence of an embryo or embryos is confirmed and their heart function is checked.