How Does A Pregnancy Test Work?

After a woman gets pregnant, her body produces a hormone called human chorionic gonadotropin (hCG). It is only present in her body during pregnancy.

This hormone builds rapidly, moving into her urine and bloodstream. Most pregnancy tests are taken with urine samples. You get the results quicker, but they may not be as accurate as a blood test.

Isn’t a home pregnancy test enough?

If you took a home pregnancy test, you may not feel testing again is necessary. Home pregnancy tests are reliable, but some tests are more sensitive than others making the day you test critical. According to the Mayo Clinic, there are a few reasons you could get an incorrect result on a pregnancy test:

  • Taking the test too early before hCG is detectable.
  • Checking the results of the test too soon. The average test suggests waiting 4 to 5 minutes for results.
  • Taking the test later in the day rather than first thing in the morning.

Other reasons include:

  • The hCG levels haven’t decreased enough after an abortion or early pregnancy loss.
  • Certain medications can trigger a false-positive result.
  • An ectopic pregnancy (the pregnancy is located outside of the uterus).

When Should I Take A Pregnancy Test?

Testing is often determined by your monthly cycle. If your period is regular (every 28 to 30 days), you should test after the first day of your missed period. But if your monthly cycle is irregular, you should wait 4 to 5 days after you thought your period might begin.

The Test Is Positive. Now what?

If you receive a positive pregnancy test result from one of our center tests, we will schedule you for a medical appointment which includes a free ultrasound. Ultrasound gives you the additional information you need to make a confident and empowered decision for your future.