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Is it possible to have a false positive home pregnancy test and blood test?


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Wiki User
2005-11-06 21:27:38
2005-11-06 21:27:38

If your blood test came back positive then it is positive.

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False positive pregnancy tests are extremely rare, the test reacts to hCG which is a hormone found in the blood and urine of a woman who is pregnant or from certain rare medical conditions.

A false positive is very rare but it is possible. It is a LOT more common to get a false negaive than a false positive. The best thing for you to do, is to do another pregnancy test. If the test is still positive then you are pregnant and should see your doctor.

Yes, an HCG injection can give you a false positive on a blood draw pregnancy test.

A false positive pregnancy test is extremely rare, so I would say no, if the tests read positive you are most likely pregnant.

The chances of that happening are very low as false positive pregnancy tests are very rare

Well it is possible for a false positive and it's possible for a false negative, the safest way to be sure is to get a blood test.

One AnswerA blood test is the most accurate way of determining pregnancy. The only thing that will cause a false positive blood test is a chemical pregnancy, etopic pregnancy or medication containing HCG. Have a repeat blood test. Another AnswerFalse positive for what? For hepatitis, HIV, alcohol no probably not. For tests of hormones levels, maybe. Really depends on what is being tested.

Absolutely. Most Pregnancy tests tend to 90-96% accurate.

It is likely that you are pregnant. It is possible to have false negative results, but unlikely to have a false positive.

No, UTI does not cause a false positive pregnancy test. Pregnancy tests are very specific to hCG (the pregnancy hormone), if the test reads positive you are pregnant.

There are no reasons for hcg in your blood apart from pregnancy but there is a rare cancer that can make hcg in your blood but very low levels we had a 8 yr old patients with hcg in her bloods. Other answer is pregnancy

Home pregnancy tests rarely give you a false-positive. If two pregnancy tests have shown positive, I would say that you are definitely pregnant. The may've mucked up the blood test. Judge for yourself if you have any other signs of pregnancy. Sore breasts? Nausea? Dizziness and headaches? Bloating?

False positive pregnancy tests are extremely rare. They are caused by tumors when they occur.

YES. It is possible. So your Gynecologist will do Ultrasonography to confirm but this is rare.

A positive pregnancy test is simply a rise in hormones secreted in urine or blood. False positive pregnancy tests are rare but can be caused by adrenal tumors, or possibly certain medications. A false pregnancy test when a woman is actually pregnant means she isn't secreting the hormones in her urine yet, or they are high enough to be picked up by the test she uses. Blood test for pregnancy is more accurate.

there is always an error factor but with a blood test you can be pretty sure its correct.

There is no gallbladder disease or problem that would cause a false positive pregnancy test.

Yes, lithium can cause a false pregnancy on a pregnancy test.

See this answer: "No, melatonin would not give a false positive result on a pregnancy test, however melatonin does increase the amount of the hormone which pregnancy testing kits look for if you are pregnant so you may get a true positive earlier than normally possible. Many pregnancies are rejected by the body very early in development. " Source: Can melatonin give you a false positive pregnancy test reading

Yes it is possible. Above answer is WRONG. Again A cyst DOES NOT PRODUCE HCG which is the ONLY WAY YOU ARE GOING TO GET A POSITIVE PREGNANCY TESTS.

it's not very likely, blood tests are very accurate and HCG (pregnancy hormone) shows in the blood before in the urine. HPT's are not as accurate and sometimes can provide a false positive result, though it's not all that often. Sometimes if you look at the test after the time allowed in the instructions you will see a false positive line. ~pawsalmighty

Most home pregnancy tests are around 95% accurate.It's also more likely to have a false negative than a false positive. You should see a Dr for a blood pregnancy test now.

no because if you are pregnant even at an early stage in your pregnancy the hcg hormone shows up

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