Pregnancy Tests: When to Take One, Accuracy, and Results

When to Take a Pregnancy Test

You can take a pregnancy test as soon as 6 days after you have unprotected sex, but the most accurate results are typically obtained after you have missed your period. If you have a regular cycle, this means about 14 days after ovulation.

If you have an irregular cycle, it is best to wait until at least 1 week after your expected period date to take a pregnancy test.

Accuracy of Pregnancy Tests

Pregnancy tests are very accurate, especially when taken after you have missed your period. Most pregnancy tests have an accuracy rate of over 99%. However, there are a few things that can affect the accuracy of a pregnancy test, such as:

  • Taking the test too early
  • Not following the instructions carefully
  • Using a test that is expired
  • Having a medical condition, such as a miscarriage or ectopic pregnancy

Results of Pregnancy Tests

Pregnancy tests work by detecting the presence of a hormone called human chorionic gonadotropin (hCG) in your urine. hCG is produced by the placenta after a fertilized egg implants in the uterus.

If you are pregnant, the pregnancy test will display a positive result. If you are not pregnant, the pregnancy test will display a negative result.

If you get a positive pregnancy test result, it is important to contact your doctor to schedule a prenatal appointment.

Here are some tips for taking a pregnancy test:

  • Read and follow the instructions on the pregnancy test carefully.
  • Take the pregnancy test first thing in the morning, when your urine is most concentrated.
  • Do not eat or drink anything for at least 30 minutes before taking the pregnancy test.
  • Empty your bladder completely before taking the pregnancy test.
  • Wait the full amount of time specified in the instructions before reading the results.

If you have any questions or concerns about pregnancy tests, talk to your doctor.