chances of a false negative pregnancy test

Pregnancy tests are generally considered accurate when taken 14 days after you have sex with a risk of pregnancy. Here are some questions to ask yourself to determine if the test was done as instructed, or that might affect the results of your test: When was the test taken?

It can be a few days until you get to know the results of the test. Blood tests need to be done by a clinician, who send off the samples to a lab. They can detect pregnancy sooner than 2 weeks after sex where there was a risk of pregnancy (some places online say 1 week, others say 11 days).

Blood tests are more accurate than urine tests, but even the urine tests you do at home are typically around 99% accurate when done as instructed. Both urine and blood tests are looking for a hormone called Human Chorionic Gonadotropin (hCG), which is created in the body after a fertilized egg implants to a person’s uterine wall. Pregnancy tests are generally very accurate. Do you think the tests are accurate? Can I trust that I’m not pregnant? By Teen Health Source Q: I’ve taken 2 pregnancy tests that were both negative, but my period is still over a week late.

Chances of a false negative pregnancy test