The cost of blood test to check if you are pregnant is about 50-60 RMB, which will vary from hospital to hospital and from region to region. Generally, around 35 days after menopause, blood HCG can be checked by taking venous blood to find out if you are pregnant. If the blood HCG value is high, more than 100mIU/ml or more than 100mIU/ml, you can basically be sure that you are pregnant. There are some other tests to be performed after pregnancy, such as routine ultrasound examination around 40 days after menopause to find out if it is an intrauterine pregnancy. If the pregnancy is intrauterine and you want to keep the baby, you should take the four tests of eugenics, including toxoplasmosis, rubella virus, cytomegalovirus, herpes simplex virus, blood group test and routine blood test, and folic acid bioavailability test.