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Doctor insights on: Do Blue Dye Pregnancy Tests Give False Positives

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Are blue dye pregnancy tests known for giving false positives ?

Are blue dye pregnancy tests known for giving false positives ?

Controversial.: Many patients report problems with how they interpret the blue lines. So if you study how to interpret the blue lines you might get less 'false positives'. Generally speaking pregnancy tests are really good in having very few false positives. If it is an issue, get pink dye ones. ...Read more

Dr. Thomas Fiala
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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I have heard blue dye pregnancy tests are known for false positives i took a blue dye pregnancy test, and it was positive, should I believe the test?

I have heard blue dye pregnancy tests are known for false positives i took a blue dye pregnancy test, and it was positive, should I believe the test?

See below: Did you miss your period? Do you have any signs listed in the website below? Unless you have evidence otherwise, please consider yourself pregnant and seek care for your and your baby's health. http://americanpregnancy.org/gettingpregnant/earlypregnancysymptoms.html. ...Read more

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Is it true blue dye pregnancy tests aren't trustworthy?

Is it true blue dye pregnancy tests aren't trustworthy?

Not true : That is not true. They are reliable. If you think you might be pregnant check then check a home pregnancy test. They are cheap, reliable and available at any pharmacy. ...Read more

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Are blue line pregnancy tests known to give false positives?

Are blue line pregnancy tests known to give false positives?

See below: The answer is yes. Any test in medicine can have false positive and false negative tests. If your test is positve wait a couple of days and retest two postive tests would make it very unlikely to be wrong. ...Read more

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Can pregnancy tests at dollar tree give you a false positive results?

Can pregnancy tests at dollar tree give you a false positive results?

Very unlikely: A false positive pregnancy test is very unlikely. If you are concerned, ask your doctor for a blood level of hcg: that will tell you for sure. ...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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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

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Can spinal cord injury have any effect on hormones to give false positive pregnancy tests or negatives when u really are pregnant?

Can spinal cord injury have any effect on hormones to give false positive pregnancy tests or negatives when u really are pregnant?

Never heard of such: Interesting thought but i've never heard any description of what you're suggesting in the literature. What kind of spinal cord injury are we talking about? Bottom line is my vote is a hearty , no, spinal cord injury does not effect the outcome of pregnancy tests one way or the other. ...Read more

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Can early home pregnancy tests give false negatives if you are late with your period?

Can early home pregnancy tests give false negatives if you are late with your period?

Yes that can happen: It can depend on the concentration of urine and if the test was done properly , a home test should be + at the time of the missed period, if it is _ and u think u are preg then u must have a blood preg test to know for sure. ...Read more

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Hi I have had 7 positive pregnancy tests, 2 being digital, I have cysts on my ovaries, could this cause false positives?

Hi I have had 7 positive pregnancy tests, 2 being digital,  I have cysts on my ovaries,  could this cause false positives?

Not likely: However, urine tests don't offer you the ability to see if your level is going up like a blood (serum) pregnancy test. Would be a good idea to call your physician and ask for a serum quantitative HCG and have him/her call in some prenatal vitamins as well until your first OB appointment. Also, follicles (egg cysts) are needed to conceive and a corpus luteum cysts is needed for progesterone. ...Read more

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I took 2 clear blue pregnancy tests 1 said positive 1 to 2 weeks and the other ones had negative why is this?

I took 2 clear blue pregnancy tests 1 said positive 1 to 2 weeks and the other ones had negative why is this?

Many variables: early pregnancy testing can be variable with the time of day the amount of HCG in urine and how dilute the urine so a positive probably is true so do another test ...Read more

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Have had 4 positive home pregnancy tests and 1 negitive test between the positives could it have been a false negative ?

Have had 4 positive home pregnancy tests and 1 negitive test between the positives could it have been a false negative ?

Yes: One negative urine pregnancy test is a false negative if 3 other tests are positive before and after the negative. A follow-up test later at the ob-gyn doctor's office can be done if desired. ...Read more