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Doctor insights on: Percentage Of False Positive Pregnancy Tests

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Dr. Jan Lei Iwata
4 doctors shared insights

Pregnancy (Definition)

When your due date arrives, you will be more than ready to have your baby! Most women deliver the baby somewhere between 37 and 42 weeks. According to the American College of Obstetricians and Gynecologists, only 5% of babies arrive on the exact due date. Approximately 7% of babies are not delivered by 42 weeks, and when that happens, it is referred to ...Read more


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Can some type of cancers give you 4 false positive pregnancy tests?

Can some type of cancers give you 4 false positive pregnancy tests?

Extremely rare!: I would be more concerned that the pregnancy tests were positive due to a true pregnancy or due to an ectopic pregnancy. Please see you doctor. ...Read more

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Could Plan B cause spotting and false positive pregnancy tests?

Could Plan B cause spotting and false positive pregnancy tests?

Plan B: No. Plan b will not cause a postive pregnancy test. If positive its because most likely you are pregnant and the Plan B did not work or you took it more than the recommended 3-5 days after an unprotected sexual encounter. See your obgyn for more testing and ultrasound. ...Read more

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What are the chances that protein in urine could give false positive pregnancy tests?

What are the chances that protein in urine could give false positive pregnancy tests?

Won't alter test: Today's home pregnancy tests are very accurate and not affected by foods, herbs, protein in urine, common illnesses, sexually transmitted diseases, vaginal spotting, or medications. A test gives a reliable result 3 weeks after sex (or when conception might have been) or 1 week after missing a period. If done sooner, a negative result may be due to testing too early, but a positive is likely real. ...Read more