Blood test to see pregnancy does not need fasting, now there are many clinical methods to confirm the diagnosis of early pregnancy, the most common is to use early pregnancy test paper to detect the patient’s urine, but usually have to wait until more than a week after menopause can be checked out. The blood test is much more sensitive. Shortly after the fertilized egg has been laid, the HCG level in the patient’s blood can be detected by radioimmunoassay to be elevated, and early pregnancy can be diagnosed. This method is not only sensitive but also accurate, so many patients now choose this method to confirm the diagnosis. If you want to confirm whether the pregnancy is intrauterine, you need to do ultrasound, the main purpose of early pregnancy ultrasound is to determine the intrauterine pregnancy, to exclude ectopic pregnancy, trophoblastic diseases, pelvic masses and so on. Therefore, a positive blood or urine HCG and the presence of an embryo and primordial heart tube pulsation on ultrasound will confirm a normal early pregnancy.