A urine pregnancy test is specifically designed to detect the presence of the hormone human chorionic gonadotropin (hCG), which is produced shortly after an embryo attaches to the uterine lining. This hormone can be detected in the urine of a pregnant individual, making the urine pregnancy test a reliable and common method for determining pregnancy.
In contrast, a blood glucose test measures the level of glucose in the blood and is used primarily to diagnose diabetes or monitor glucose levels in individuals with diabetes. A complete blood count (CBC) is a general test that assesses overall health and detects a variety of disorders such as anemia, infection, and many other diseases, but it does not provide information about pregnancy. Similarly, a liver function test evaluates liver health and function; it is not related to pregnancy detection. Therefore, the urine pregnancy test is the most appropriate choice for confirming pregnancy.