A blood test for early pregnancy will cost about 30 or 40 dollars, but of course the price may vary depending on the hospital and the reagents used. Usually when you are pregnant, you need to go to the hospital to have your blood tested for blood HCG, which is more accurate compared to urine HCG results. The test is usually relatively accurate when you have been menstruating for more than 1 month. If the blood HCG shows positive, it usually indicates that the patient is pregnant. If the ultrasound reveals the presence of a gestational sac in the uterine cavity and a heartbeat, the pregnancy is more confirmed.