How early can a pregnancy test detect pregnancy?

Answer 1

The very earliest a home pregnancy test can detect a pregnancy, is 6 DPO, or 6 days past ovulation. However, some babies will not implant until as late as 10-12 DPO, which in that case, a pregnancy test would not be able to detect a pregnancy until after the period is missed. For a pregnancy test to be able to detect a pregnancy, the baby has to have implanted into the uterine wall, so that hCG can be produced. HCG can be detected in the blood before it can be detected in the urine, so if you really want to know if you are pregnant, you might want to get a blood test done by your OB.