The easiest way to detect pregnancy is not true, blood human chorionic gonadotropin (blood HCG) test, urine pregnancy test is the most commonly used test. When the fertilized egg of a normal pregnancy is implanted, that is, on the sixth day after ovulation, when the trophoblast of the fertilized egg is formed, HCG begins to be produced, and peripheral blood HCG can be detected in about one day, and at this time, the level of blood human chorionic gonadotropin is examined, and when the level of human chorionic gonadotropin is elevated over more than 5IU/L, the diagnosis of pregnancy can be confirmed. Clinically, the urine pregnancy test is often used to check the level of human chorionic gonadotropin in the urine of the examinee to determine whether the pregnancy, such as a positive urine pregnancy test can confirm the diagnosis of pregnancy, this method is relatively simple and widely used. When the patient determines that the pregnancy should be timely medical care, to clarify whether the intrauterine pregnancy.