How late into pregnancy can a pregnancy test work?
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.
The only thing that 'might' work is to drastically dilute the urine. So, I would try to take the pregnancy test as late in the day as possible and drink as much water as possible. You might get away with it during the early stages of pregnancy when your HCG levels are low, but this will not work for long....
What are your chances of pregnancy if your period is four days late and you are hungry all the time?
What are the chances of pregnancy if your period is 12 days late but a home pregnancy test was negative?
Some tests can show positive before your period is even late. It depends on how sensitive the test is. If using an early detection test with negative results, retest when your period is a week late. The test looks for hCG, a hormone that can vary greatly from woman to woman and pregnancy to pregnancy.