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Doctor insights on: What Can Cause A Negative Pregnancy Test

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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. Lonnie 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 could cause a negative pregnancy test and no period?

Many causes: At yoru age perimenopause , u can start skippimg periods, otehr causes would be hypothyroid, abnormal prolactin, so you need blood work including ovarian function tsteing and an ultarsound so you should see your gyn. ...Read more

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What could cause a pregnancy test to give a false positive?

What could cause a pregnancy test to give a false positive?

Big cause: is letting it sit out and reading it much later than it should have been read. ...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 could cause no period and a negative pregnancy test?

What could cause no period and a negative pregnancy test?

Anovulation: Anovulatory cycle can mimic these symptoms. In these cycles, the ovary fails to release an egg which disrupts hormonal levels, causing the cycle to be abnormal. ...Read more

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What would cause a false positive pregnancy test?

What would cause a false positive pregnancy test?

Very unlikely: Three tests are what you are asking about and the statistics make that virtually impossible to have been a false positive. ...Read more

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CAN A STD CAUSE A MISSED PERIOD & CAUSE A POSITIVE PREGNANCY TEST IF SO WHAT STD CAUSE THIS ?

CAN A STD CAUSE A MISSED PERIOD & CAUSE A POSITIVE PREGNANCY TEST IF SO WHAT STD CAUSE THIS ?

Not an STD: No STD causes missed periods or positive pregnancy tests. Being pregancy is the only reason for a positive test! Howver, since you're obviously concerned about STDs, you may be at high risk -- so I would suggest being tested to be safe. But not because of these particular symptoms. ...Read more

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Can anything cause a false positive on a pregnancy test?

Can anything cause a false positive on a pregnancy test?

Unlikely: Home pregnancy tests are very sensitive and can turn positive before missed period... Reccomend follow-up with md for verification... ...Read more

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What causes a chlamydia test to be a false negative?

What causes a chlamydia test to be a false negative?

It's just random: Tests miss 5-10% of infections, more by urine, less by urethral or vaginal swab. Maybe other possibilities as well. Chlamydia clears on its own in a few weeks to months, so current testing is negative. Or s/he received an antibiotic for chlamydia (and didn't admit it) or for another infection, curing chlamydia or interfering with the test. Partner(s) of infected person need Rx, even w/ neg tests. ...Read more

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What could cause a "false pregnancy"?

What could cause a "false pregnancy"?

Many things: False pregnancy may be psychological. The other " false pregnancy" may be a positive pregnancy test when patient is not pregnant. For this condition one has to see a physician. ...Read more

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Can my hypothyroidism cause me to have a false positive pregnancy test result?

Can my hypothyroidism cause me to have a false positive pregnancy test result?

Not likely: Hypothyroidism is not expected to cause a false positive pregnancy test. If you have any concern, get a blood test for HCG level.
For good health - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Drink enough water daily, so that your urine is mostly colorless. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form.
Practice safe sex, if you have sex.
Get HPV vaccine ...Read more

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Can pcos cause a false negative in a pregnancy test?

Can pcos cause a false negative in a pregnancy test?

Should not: The pregnancy tests use b-hcg for their evaluation, and are very sensitive. Pcos should not affect the testing. ...Read more

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What could cause fake negative pregnancy results?

What could cause fake negative pregnancy results?

Not much : 1. Reading it or doing it wrong 2. Doing it to early. This can easily be solved by repeating the test two days later. If you were actually pregnant your bhcg hormone would rise enough for detection. ...Read more

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Besides sperm what can cause a postive pregnancy test?

Besides sperm what can cause a postive pregnancy test?

False positive test: "some diseases of the liver, cancers, and other medical conditions may produce elevated HCG and thus cause a false positive pregnancy test. These include choriocarcinoma and other germ cell tumors, IgA deficiencies, heterophile antibodies, enterocystoplasties, gestational trophoblastic diseases (gtd), and gestational trophoblastic neoplasms (gtn)." wikipedia. ...Read more

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What can cause a positive PPD test reading?

What can cause a positive PPD test reading?

Mycobacteria: Tuberculosis and other members of the same family, some less severe. There are also "positives" that aren't true in duration - like an allergic reaction at the site within minutes of ppd placement. ...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