HCG serves to maintain progesterone production by the corpus luteum in the early stages of pregnancy. By the time HCG drops at the beginning of the second trimester, the placenta can make sufficient progesterone to maintain the endometrium. HCG also stimulates the development of fetal gonads and the synthesis of androgens by the fetal testes . Performed A urine sample is obtained. Urinate in the normal manner, but collect a sample in a container.
Most pregnancy tests depend on the process of agglutination.
Some of the more sensitive urine tests use monoclonal antibodies rather than sensitized red blood cells. Some home pregnancy tests simply require the test strip to be dipped into the urine or passed through the urine stream while urinating. No special preparation is needed. The first morning urine sample is often recommended. The test is negative if you are not pregnant .