There are two types of HCG tests, one can be measured by blood draw and the other can be done by urine test. HCG is produced in the body after pregnancy and it doubles as the number of days of menopause gradually increases. Therefore, by testing the HCG level in blood or urine, it can help determine pregnancy. A urine pregnancy test can be done in the early stages of pregnancy by purchasing a urine pregnancy test paper and dip it into the morning urine and watching the results. A more definitive test is the HCG level in the blood, which can help determine the activity of the embryo in addition to determining whether or not you are pregnant.