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Yes, if the test is taken before the first day of your period. Blood tests are only accurate 7-12 days after ovulation. For some woman that may mean that the test may not be accurate till the day of their expected period. Once that day has come then blood tests are almost never wrong.

You say no but then you say almost never so what is it can it happen or not??

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โˆ™ 2011-08-27 18:40:39
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Q: Can blood pregnancy tests be wrong?
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Related questions

Can blood tests for pregnancy be wrong?

A qualitative blood test can be wrong. The Quantitative Beta HCG blood test will not be wrong.

You have had 3 positive blood pregnancy tests and one negative home pregnancy test which was taken after the first positive blood test was reported what does this mean?

It means that either the blood tests were wrong or the home pregnancy test was wrong

How do blood pregnancy tests work?

It tests the hCG (pregnancy hormone) levels that are in your blood.

Can a doctors pregnancy test be wrong?

Yes, all pregnancy tests can be wrong

Is the test a blood test?

Pregnancy tests can be both blood tests ot urine tests.

What does 10 percent positive on a blood pregnancy test mean?

You read the results wrong. Blood pregnancy tests aren't reported in percentages. Take a look at the result again.

Are home pregnancy tests as accurate as blood tests?

Home pregnancy tests are not as effective as blood tests. I am on my fifth pregnancy and have had many occasions where a home test has simply not shown up. Although I have been told this is rare, a blood test is the only way to be certain.

If I had 4 positive urine pregnancy tests and I went to the doctor and he couldn't find anything in the sonogram he administered so he had me do a blood test could 4 home pregnancy tests be wrong?

yes the home pregnancy test is wrong because accuracy wise the blood test for pregnancy which more clinics and hospitals use is more accurate than urine test for pregnancy which is the one frequently used in home pregnancy test or the quick kit test for pregnancy.

Can blood tests detect pregnancy?


Will pregnancy show up in a blood test for mono?

No. A pregnancy test tests for the hormones that only show in pregnancy. Mono is a disease and they would look for the signs of Mono. Now, they could also do a pregnancy test just to make sure you aren't pregnant to check off what is wrong with you. The doctor will order blood tests of various kinds to be sure what the problem is with your health.

What are tests you take outside of school?

Employment tests, pregnancy tests, drug tests, blood and urine tests for medical examinations, etc.

Who tests your blood to see what is wrong?


What is wrong if you have had periods for the last 3 months but they have been very short and you have all the pregnancy symptoms but 3 pregnancy tests have been negative?

It can be two things. 1) Pregnancy or 2) Hormonal problems. Because your having pregnancy symptoms and negative pregnancy tests, you need to see your doctor for a blood test and a gynocologist incase its hormonal related.

How accurate are blood pregnancy tests?

100% when done correctly.

I got 3 faint positive urine tests but a negative hcg blood test why and can it be wrong?

On rare occasions you can encounter a false positive due to improper testing, expired pregnancy tests, rare medical conditions such as certain types of cancer, evaporation lines, a recent pregnancy or a chemical pregnancy.

How likely is it that a pregnancy test is wrong showing symptoms no period negative test?

Most pregnancy tests are 99%

Can several pregnancy tests be wrong if taken before your period is due?


What could be wrong if my friend has missed her period (6 months late) and has signs of pregnancy but all tests are negative?

All home pregnancy tests*

Can you find out sooner if your pregnant by having a doctor do a pregnancy test?

Maybe. A doctor can do a variety of tests, including urine tests, blood tests, and ultrasound. Sometimes a blood test will show a pregnancy that doesn't yet show up in a urine test.

How effective are home pregnancy tests?

Home pregnancy tests isn't always 100% percent sure. It is best to get a blood and urine test at the doctors office.

What could be wrong with you i am 15 days late and you have taken 4 home pregnancy tests and they have all come out negative?

i would get a blood pregnancy test done. maybe your HCG levels are just really low. Could also be a chemical pregnancy

Could four positive home pregnancy test all be wrong?

There is a chance they could be, but i doult that four of them all saying you are pregnant would be wrong. If you dont trust the pregnancy tests then go to your doctor and ask for a blood test to confirm if you are pregnant or not. Hope i helped

When you get a negative blood test for pregnancy but you have all the symptoms is it possible to be pregnant?

Yes, however not very likely. Blood tests are 99.9% acurate. Blood tests are less acurate before pregnancy effects the body, but at that point there wouldn't be "symptoms" either.

HCG present in ectopic pregnancy?

Yes. In both urine and blood tests, HCG is present in ectopic pregnancy.

What are the name of all pregnancy test before and during pregnancy?

Pre-natal: before conception Ante-natal: During pregnancy Post-Natal: after the pregnancy there are so many tests that are done, some compulsory and some optional, some are blood tests some are urine tests and some are just measurement tests.