How long it takes to take an early pregnancy test after a delayed period has nothing to do with the delay in menstruation, and it is not only when the period is delayed that a test can be taken, but it depends on the time of intercourse, as long as the test is taken more than 12 days after intercourse, and the results will be accurate. If you want to know if there is a possibility of conception, you can go to the hospital and have a blood test for human chorionic gonadotropin (HCG) as early as 8 days after intercourse. The normal value of human chorionic gonadotropin is 0-5, and anything above 5 means that you are pregnant. If it is below 5, there is no possibility of conception. At the same time, the delay of menstruation, first of all, to rule out the possibility of pregnancy, not every delay is pregnancy, sometimes environmental stress, mental factors, endocrine hormone abnormality, may cause menstruation delay time, menstruation is generally 7-10 days is a normal phenomenon, it is recommended that you can observe.