It’s the moment of truth; you’ve taken a pregnancy test. The science behind the answer to one of life’s greatest miracles is really quite simple. Every pregnancy test is based on the identification of the human chorionic gonadotropin, or hCG.
This hormone is produced by pregnant women only, and is created by cells within the uterus. hCG signals the ovaries to manufacture estrogen and progesterone to help a fetus to grow. This hormone is detected by blood and urine pregnancy tests. As the pregnancy proceeds, the levels of hCG levels continue to rise. Therefore, they are easier to detect further into the term of the pregnancy.
A pregnancy test that’s based on a blood sample is performed by a doctor or other health professional in a clinic. This test detects pregnancy by gauging the hCG levels in the blood. Further, there are two types of blood tests to determine pregnancy: quantitative and qualitative blood tests. Read more . . .