A blood test for pregnancy is performed by a technician. Which hormone is most useful in determining whether the woman is pregnant? Explain why.
I remember that a hormone called hCG is the one tested for to ensure that a woman is pregnant. This is because it is actually made by the embryo after it implants into the mother's endometrium for nourishment. It acts as a replacement for the corpus luteum.
human chorionic gonadotrophin, or hcg.this chemical goes up and up in your bloodstream the more pregnant u get :)