It’s more common to get a false negative on a pregnancy test (due to testing too early, using an expired test, or not following the instructions), but false positives do occasionally happen. This is because human Chorionic Gonadotropin (hCG) levels vary from woman to woman, and there may not yet be enough of the hormone for the test to give a positive result. Then, if someone else decides how many tennis balls are on the court by counting how many the tester caught, they’ll incorrectly say none.

Pregnancy? – Cleveland Clinic How Early Can You Detect Pregnancy? – Cleveland Clinic

Well, the high levels of hCG overwhelm the pregnancy test and it doesn’t bond with them correctly or at all. If you just want to test once or twice, you might want to opt for tests that come just a couple to a package.If you are pregnant you will see a pink line, although this might be very faint if you test too early. Alexandria (Australia): Australasian Association for Clinical Biochemistry and Laboratory Medicine; c2022.

What Is a Blood Pregnancy Test and How Does It Work?

Some tests, like the Clearblue Rapid Detection Pregnancy Test, can give you results in as fast as one minute, while others require you to wait for up to five minutes. On the other hand, an extremely high hCG level could suggest that the person is carrying twins or could have an abnormal pregnancy. If you received an hCG trigger shot to help with fertility, it's best to wait two weeks after the shot to take a pregnancy test.

For no-frills testing (both pregnancy and ovulation), the Wondo Fertility Combination Tests are your go-to. In specific cases, there are multiple reasons why a blood test may be preferred, but usually, a urine test is all you need. It includes our all-around favorite, the First Response Early Detection test, as well as their digital test and their rapid (1-minute result) test. Because of this, you may get a positive result with the new SELFCheck pregnancy blood test before you would with a urine test. If 3 whole minutes feel like a lifetime to wait for a result, the Clearblue Rapid Detection Pregnancy Test might be for you — the test delivers results in just 1 minute.