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Doctor insights on: Expired Pregnancy Test False Negative

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What could cause a false negative for a pregnancy test?

What could cause a false negative for a pregnancy test?

See below: The test is past its expiration date; you took the test the wrong way; you tested too soon; your urine is too diluted because you consumed large amounts of fluid right before the test; you are taking certain medications, such as diuretics or antihistaminics. If you are still concerned you may see your doctor for a blood test. http://www.webmd.com/baby/guide/pregnancy-tests. ...Read more

Dr. Sheila Smith
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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What are the odds of a false negative uring pregnancy test?

What are the odds of a false negative uring pregnancy test?

Minimal: The pregnancy tests currently available are quite accurate. The earlier in the pregnancy that the test is done, the more likely to have a pregnancy hormone level too low to detect - but by the time of a missed period the false negatives would be less than 2%. ...Read more

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How common is it to get a false negative on a pregnancy test?

How common is it to get a false negative on a pregnancy test?

Depends: Almost all comercial preg tests report efficacy close to 99%. Trick is however, that depends on when they are done. There is a higher false negative rate if performed before the time os the missed cycle. Most-if not all- pregnancy tests should be positive by one week after a missed cycle. Always check the boxes. They state their "sensivitiy" level. ...Read more

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Is it possible to have a false negative on a pregnancy test? If so what causes them

Testing too soon: Many people test for pregnancy way before the test could be valid. If one tests before a missed period the test is completely invalid if negative and has to be repeated when it is done after the period is delayed. ...Read more

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What are the odds of getting a false negative clear-blue digital pregnancy test at 7 weeks?

What are the odds of getting a false negative clear-blue digital pregnancy test at 7 weeks?

Pregnancy: Your question is confusing. If you know you are 7 weeks pregnant, why test again? If you've missed your period but have not had a + pregnancy test, then i cannot tell you what the odds of the test being negative (clear blue digital). Home pregnancy tests are usually pretty accurate, so if it is repeatedly negative, chances are you are not pregnant. ...Read more

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I'm two and a half weeks late and pregnancy test are saying negative. I would be 5 and a half weeks. Could it be to soon and just be false negative?

I'm two and a half weeks late and pregnancy test are saying negative. I would be 5 and a half weeks. Could it be to soon and just be false negative?

Can't tell you: Although most urine pregnancy tests are fairly reliable, the blood beta HCG test is much more accurate and sensitive.False negative urine tests are a bit rare but can happen. False negative blood pregnancy tests are even rarer and quite unusual. ...Read more

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Is it possible to get a false negative after a confirmed positive pregnancy test?

Is it possible to get a false negative after a confirmed positive pregnancy test?

Technique: If you do not do the test correctly, it may turn out negative and by definition would be false negative. ...Read more

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Is it common to get a false negative if you take a pregnancy test while you're drunk?

Is it common to get a false negative if you take a pregnancy test while you're drunk?

No...no...no...: Please don't ever drink if you think that you are pregnant. This can lead to something called "fetal alcohol syndrome". http://www.mayoclinic.com/health/home-pregnancy-tests/pr00100/nsectiongroup=2 having dilute urine can cause a falsely negative pregnancy test. ...Read more

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Is it possible to get a false negative on a pregnancy test taken two weeks after conception?

Is it possible to get a false negative on a pregnancy test taken two weeks after conception?

Yes, sometimes: A urine pregnancy test, done correctly, gives a reliable result 3 weeks after sex (3 weeks after when conception might have occurred), or 1 week after missing a period. If done sooner, a positive result is likely real, but a negative result may be due to testing too soon, and thus lead to a repeat test. If a woman gets her normal regular period, then she is not pregnant, and a test is not needed. ...Read more

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What is the chance of getting a false negative on pregnancy test at possible 16 weeks of pregnancy?

What is the chance of getting a false negative on pregnancy test at possible 16 weeks of pregnancy?

Hmmm...: Most women know they are 16 weeks pregnant without a urine or blood test. So, if there is an obvious baby inside, then any negative pregnancy test is a false negative. That being said, a false negative pregnancy test is rare after 4-5 weeks of pregnancy... which means that if a woman has not "confirmed a pregnancy" at 16 weeks, and she gets a negative test result, she should visit her doctor. ...Read more

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What to do if i'm accumulating pregnancy symptoms, and was wondering if at this far along it's possible to get a false negative from a urine pregnancy test?

Testing: One study found that nearly 1/4 of home pregnancy tests give a false negative. It also found that nearly 1/3 of users did not follow the directions properly. Finally, testing prior to nine days after missed period had more false negatives than testing more than nine days after. ...Read more

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How often could a false negative pregnancy test occur?

How often could a false negative pregnancy test occur?

Not often: Pregnancy tests are quite accurate. A pregnancy test should be accurate by about 12 days after your ovulation, so by the time your period is late the test should be accurate. ...Read more

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What is the probability of a false negative pregnancy test?

See below: When done in accordance with manufacturer's direction, both sensitivity and specificity are high. ...Read more

Dr. Stephen Sudler
482 doctors shared insights

Pregnancy Test (Definition)

A pregnancy test measures a hormone called human chorionic gonadotropin (HCG). HCG is a hormone produced during pregnancy. It appears in the blood and urine of pregnant women as early as ...Read more