How late into pregnancy can a pregnancy test work?

Answer:
At least 10-12 days after ovulation. It is best to wait until your missed period to get an accurate result. I tested with the early pregnancy test (5 days before missed period) and I got a negative. Then I took a test 3 days after my late period and got a positive.
First answer by Yesica s2001. Last edit by Yesica s2001. Contributor trust: 0 [recommend contributor recommended]. Question popularity: 2 [recommend question].