A blood test for pregnancy eight days after ovulation is not a finger prick, but involves drawing blood from a vein for testing. Generally, a blood test eight days after ovulation involves drawing blood from a vein to determine the level of HCG (human chorionic gonadotropin) in the blood to determine if a woman is pregnant. To check the level of HCG (human chorionic gonadotropin) in the blood, it is usually not possible to prick the finger to get the peripheral blood, but rather to draw blood from the woman’s vein, which can be done on an empty stomach or after eating, and will not affect the results of the test. The blood test is also a reliable and accurate indicator of early pregnancy, but it can only clarify whether a woman is pregnant or not, but cannot determine whether it is intrauterine or ectopic, and ultrasound is needed to clarify if necessary. If there is abdominal pain or abnormal bleeding, you need to consult a doctor in time, do not judge on your own in order to avoid delay or aggravation of the condition.