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There are two kinds of blood tests for pregnancy tests -- quantitative and qualitative. Assuming you've waited long enough (much less than 49 days), and the test is done properly by the lab, the quantitative test is very accurate. The qualitative blood test is about the same accuracy as urine tests. Even the home urine tests are 97% accurate. So if you took the quantitative blood test you can be very sure it's right. Even with the other tests 97% is pretty accurate. I suspect the error rate in blood labs is greater than that.

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2014-05-06 23:04:19
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Q: Is a negative blood pregnancy test 49 days after intercourse accurate?
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Related questions

Are you pregnant if home pregnancy test is Negative but blood test is positive?

the blood test is more accurate

Can you get a negative home pregnancy test and a positive blood test?

Yes. The home tests aren't accurate and only the blood test is the accurate one.

How is it that i got a positive at home pregnancy test and got a negative blood test?

At home pregnancy tests are not 100% accurate.

What does it mean when you have pregnancy symptoms and he pregnancy test is negative?

You may be pregnant but took the test too early or its a false negative. A blood type is most accurate.

How accurate is a home pregnancy test if you missed some birth control pills?

A home pregnancy test is very accurate when the test is performed 3-4 weeks after intercourse. A better method of testing would be via the quantitative beta hcg pregnancy blood test which is 100% accurate and can be performed as early as 5-7 days after intercourse.

Can you still be pregnant if your blood test comes out negative?

If the blood test is done too early in the pregnancy, the pregnancy won't be detected. If the blood test was done by a doctor, then he/she knows to do it and obtain an accurate result.

What does negative on a pregnancy test mean?

It either means you're not pregnant or not far enough along to detect the pregnancy hormone. A blood test is most accurate.

Does black blood cause pregnancy?

no, having intercourse with a male who has sperm is what causes pregnancy.

If you have had a tubal pregnancy will a home pregnancy test be accurate?

Yes a home pregnancy test will be accurate usually. But a blood test is the most accurate way of determing pregnancy.

Could you still be pregnant if you took a home pregnancy test 4 days after intercourse and a blood test 5 days after and they both came back negative and did you just take the tests too soon?

you are best to test for pregnancy after the first day of your period being late this will then give you a accurate reading.

After miscarriage and 0 hcg Does it make it hard for pregnancy tests to read accurate?

Hello, If you have 0 HCG in your blood, and if you conceived after this then a pregnancy test would be accurate. A pregnancy test will not be accurate if you have any HCG in your blood.

Is a blood test 100 percent accurate in determining pregnancy?

For most women yes. There are a few women who are pregnant with a negative blood and urine test. But very few.

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