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

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Q: How do blood pregnancy tests work?
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Related questions

Will pregnancy tests work for dogs?

no it will not


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


What are tests you take outside of school?

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


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.


Can a negative for a pregnancy test change being positive?

Yes it can if you have tested too early. Here is a link for information on how pregnancy tests work: http://thefertilityshop.com/fertility/pregnancy-tests-work-a-17.html


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.


How early will a blood test for pregnancy work?

Pregnancy tests work by analysing the amount of pregnancy hormone present in your body. Generally, a urine pregnancy test is less accurate for two reasons: a) the hormone is being detected through urine, which can alter moreso than blood, depending on how much water you drink and whether or not you use first morning urine (first morning urine is better for pregnancy tests). b) the pregnancy test itself isn't as detailed and reliable as an analysed blood test. The moment the sperm fertilises the egg, the hormone pregnancy starts circulating in your blood. A blood pregnancy test ought to give clear results within a couple of days. Your GP may want to take more bloods a week or so afterwards to verify the result.


Can a blood test tell you if your pregnant after an abnormal period straight away?

Both urine and blood pregnancy tests can detect pregnancy about 10 days after conception.


If your period is 10 days late but 10 urine tests all came back negative is pregnancy still possible?

Yes, because blood tests detect pregnancy earlier than urine tests do.


Is HCG pregnancy test a reliable pregnancy test for a 15-day delayed period?

If your period is more than 2 weeks late, yes an HCG blood test will certainly be able to detect the pregnancy hormone. Home pregnancy tests will work as well.


Forms of pregnancy testing?

* home pregnancy tests * or the doctor can perform a blood and urine test to check your hCG levels (pregnancy hormone levels)


Would the pregnancy tests work if you didnt have a normal period?

yes