What Are The Chances Of A False Positive Pregnancy Test

Taking a home urine pregnancy test.

A false positive can occur if you haven t properly followed the instructions on the pregnancy test. Pregnancy test results are precise most of the time but you might occasionally end up with a false negative or a false positive pregnancy test. But the embryo will still produce hcg which can lead to a false positive pregnancy test. For example you re meant to check the test results within a few minutes while the urine is still wet because as it dries an evaporation line may appear as a faint second line.

The pregnancy is lost super early and most women never even realize they happened. But an ectopic pregnancy is when a fertilized egg gets stuck en route to your uterus and grows somewhere else usually in a fallopian tube. Another reason for a false positive test result is the presence of impurities in the urine sample such as soap detergent or blood. Washing the cup may inadvertently contaminate the urine sample if you do not wash out all the soap.

But they can cause the body to. The most common explanation for a false positive is that you really were pregnant when you took the test. False negative and false positive pregnancy tests happen from time to time usually due to the misreading of home pregnancy test instructions a recent miscarriage or certain medications. Some pregnancy test kits come with cups.

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Chemical pregnancies happen when a fertilized egg is unable to implant or grow. After an abortion or miscarriage a home pregnancy test may produce a false positive result since the levels of hcg in the body may still be relatively high. It s possible to have a false positive test until your hcg levels return to their. Some women can get a positive pregnancy test and then three days after their period is.