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  • No Not always a blood test is more accurate, but not necessarily more sensitive. A lot depends on the lab. A quantitative blood test, usually called a beta hCG test, measures the exact units of hCG in the blood. That means it will detect even the most minimal level. There is another type of blood test sometimes called a qualitative hCG. This is a test that simply gives a yes or no answer to whether you are pregnant. Just like urine tests, labs vary as to what is considered a positive pregnancy test. Common cutoffs for positive are 5, 10, and 25 units. A level under 5 is considered negative. A test that is only triggered at 25 units of hCG is not any more sensitive than several of the urine HPTs.
  • Yes, urine tests test for hCG levels in women and A LOT of women have low hCG levels so the tests come out negative even though they are positive.
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โˆ™ 2009-11-17 17:50:27
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Q: Is a blood test for pregnancy more accurate than a urine test?
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Is a urine test or a blood test more accurate for determining pregnancy?

Although urine tests are almost 100 percent accurate, there could be something affecting the test that is not a pregnancy. Blood tests, are completely accurate, and i recommend anyone to get a blood test instead of a urine test, because they can tell right away if your pregnant, and it wont be something setting of the pregnancy test, when really it isn't a pregnancy, and it's always important to be absolutely positive. - Nicole.

Is blood test more accurate than urine test?

a blood test is highly more accurate then a urine test. doctors will usually give you a urine test after a blood test.

Should I take a blood test for pregnancy testing?

Yes you should take a blood test. It is more accurate & can be taken sooner than a urine test.

Is bubbles in your urine a sign of pregnancy?

The foam in your urine does not mean you are pregnant. Men's urine will foam also. If you think you are pregnant, A pregnancy test would be more accurate.

Are the doctors urine pregnancy tests more accurate than home pregnancy tests?

No. They are exactly the same.

Is blood pregnancy test more accurate than urine?

A serum (blood) pregnancy test is not necessarily more accurate than a urine test, but results may be obtained sooner in the pregnancy with a serum test for hCG, the hormone that signals pregnancy. Both methods test for the presence of human chorionic gonadotrophin which is present in the blood about 48 hours after implantation has occurred. It takes about 4 days for hCG to show up in detectable levels in the urine. Urine tests and serum tests are both highly accurate (about 97%) when performed correctly. Serum HCG tests may detect a pregnancy 6-14 days after ovulation, depending on the time of implantation. Urine HCG tests may detect a pregnancy 10 - 18 days after ovulation, depending on the time of implantation.

I have a negative home pregnancy test and now they are doing a blood test?

The blood test is more accurate/ less likely to return a false negative than the urine tests.

Is a blood test more accurate for a pregnancy test?


What is more effective a urine test conducted by a doctor or a blood test conducted by a doctor?

If the urine test is positive it is concidered to be as accurate as a blood test. However, blood test can detect pregnancy even after 7-10 days past conception. Blood test is always more SURE than urine test I would rely on blood test more! All the best!

HCG is measured in urine or blood?

Both. Home pregnancy tests measures HCG in the urine, but in the hospital they use both tests. The blood test is more accurate but takes longer to process. A urine test takes just a few minutes, while a blood test takes about an hour.

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.

Will caffeine affect a pregnancy test?

Caffeine itself will not alter the results of a pregnancy test. However, caffeine is a diuretic, which can dilute the urine. This may make it more difficult for a urine-dependent pregnancy test to detect the pregnancy hormones. For the most accurate results, perform a pregnancy test when you first urinate in the morning. Your urine will be most concentrated at that point in the day and the test will be more accurate.

Why would a doctor take a blood test to determine pregnancy?

They take a blood test so they can see what your hcg levels are. Your levels get higher the farther along you are. A blood test can determine pregnancy alot sooner than a urine test and is also more accurate.

How can you be sure that you become pregnant?

You can get a blood test done, which is more accurate than a home urine test. Also, an ultrasound test can be done to actually see the pregnancy.

Does a pregnancy test come out more accurate in the morning or afternoon?

In extrememly early pregnancies, as the pregnancy hormone is still being produced, taking the pregnancy test in the morning after you wake up is slightly more accurate as the urine is more concentrated. In the afternoon you may get a negative test result because the urine is dilated and therefore there may not be enough hormone to detect in your urine.

Is a blood test for drugs more accurate than urine test?

Yes becasue your blood will give more information

Can a pap smear determine pregnancy?

aqNo, a pap smear is used to determine cancerous cells and other abnormalities in the soft tissue. To determine pregnancy you will need either a urine test or to be more accurate a blood test.

Will it be more accuratif you did the pregnancy blood testor you can use the home pregnancy test in your case?

Yes A blood test will likely be more accurate. if you are unsure about a pregnancy see your doctor or a walk in clinic.

Why is monitoring blood glucose levels more accurate that monitoring glucose levels in the urine?

The liver and pancreas release glucose right into the blood, therefore you will get a more accurate amount if you test your blood.

What can give a false pregnancy test?

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.

Why urine is using in pregnancy test?

The hormone used to determine pregnancy is present in our blood and urine. Using urine for the test is "non invasive", meaning no one is poked with a needle or scanned by a machine. We all pass urine everyday without pain or help. So basically it is the easiest, most cost efficient way to do the test. A blood test is more accurate. It can even tell a doctor if if the pregnancy is (probably) more than one baby by the the amount of hormone present, compared to the date of conception.

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

the blood test is more accurate

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.

Is it more accurate to use the urine stream or collection cup for a pregnancy test?

Urine Stream. Otherwise they would tell u on the box to use a urine sample container...

Is a home pregnancy test more accurate than a blood test from a doctor?

Home pregnancy test are notoriously inaccurate. Go to your doctor for a serum hcg test. Over the counter urine pregnancy tests are actually quite accurate. They are not as accurate as the blood test that physicians can order, but newer urine tests can detect HCG in the urine as early as 8-10 days after conception - usually before the 1st missed period. See the link below for more information. _____________________________________________________________________ home pregnancy tests claim to be around 99% accurate after a missed period. however, blood tests done at your doctor's office are able to detect levels of HCG much earlier. blood tests are considered around 100% accurate, where as home pregnancy tests are less due to possible errors in timing or errors in performing the test. The answer preceding this one is accurate in that the blood test may be able to tell you if you are pregnant earlier - we can tell you within 3-5 days if you are pregnant. However, the actual utility of the increase in accuracy is questionable. Most people will not even suspect they are pregnant until they miss a period, by which time an over the counter urine test (which cost about 10 dollars) is just as accurate as a urine or blood test done in a doctor's office (and will cost you over 100 dollars, and possibly up to 500 dollars or more if you go to the Emergency department). Bottom line: use a urine pregnancy test at home if you have missed your period and think you may be pregnant. If you are pregnant, see your OB/Gyn or Primary care physician for follow up. A blood test is only useful if you are having problems with your pregnancy to help us work out what may be going on.