can a urine pregnancy test give a false positive?
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In very rare cases, you can have a false-positive result. This means you're not pregnant but the test says you are. You could have a false-positive result if you have blood or protein in your pee. Certain drugs, such as tranquilizers, anticonvulsants, hypnotics, and fertility drugs, could cause false-positive results.
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Not Believing Positive Test Results If you are not pregnant, a false positive pregnancy test result is unlikely. The more likely explanation is that you had a chemical pregnancy (which produces enough hCG to turn a pregnancy test positive but miscarries shortly after) or a very early miscarriage.
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It is possible to get a false negative on a pregnancy test (where the test says you're not pregnant, even though you are), particularly if you've tested before your period is due. If you've just had one negative result, you could try waiting for a few days and testing again, just to be sure.
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As with urine/home pregnancy tests, it is possible to end up with false results (both negative and positive) from a blood pregnancy test. ... So, your negative result is because there may not be enough hCG in the blood to detect a pregnancy.
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A false positive can also occur if you have recently given birth as your hCG hormone levels are still high - and your body has not realised it is no longer pregnant. There are certain medications that can interfere with your hCG levels and lead to a false positive result.
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Pregnancy test false negatives are possible. Despite marketing claims that home pregnancy tests are 99 percent accurate, research over the past decade has shown that up to 5 percent of them return false negatives. Each year, women in the US rely on some 20 million of these tests.
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Yes, it is possible. Getting a negative result doesn't mean you're not pregnant, it may just mean your hCG levels are not high enough for the test to detect the hormone in your urine.
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A chemical pregnancy wouldn't result in HCG dropping that quickly. A false negative due to dilated pee is much more likely. Early in the pregnancy, you almost have to use the first pee of the morning to get a positive test.
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Although many home pregnancy tests claim 99 percent accuracy, they are not perfect. A false-positive result is one where the test indicates that the user is pregnant when she is not. Several factors can lead to a false-positive or a negative reading.
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Getting a false-negative pregnancy test because of the hook effect is rare. False-negative test results can happen for many reasons. One older study that tested 27 different kinds of at-home pregnancy tests found that they gave false negatives almost 48 percent of the time. That's huge!
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As with urine/home pregnancy tests, it is possible to end up with false results (both negative and positive) from a blood pregnancy test.
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If you don't follow the dollar store pregnancy test instructions precisely, then the chances are that you might end up with a false positive even though you are not pregnant. Hence, it is important to read the instructions carefully and follow them to the T to get accurate results.
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Accuracy. As with urine/home pregnancy tests, it is possible to end up with false results (both negative and positive) from a blood pregnancy test.
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You'll either urinate on a pregnancy dipstick, or urinate in a cup and then put the dipstick in the urine. You'll wait a few minutes for the results. At-home pregnancy tests claim to be about 99 percent accurate. But they can sometimes result in a false positive or a false negative.
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False positive results are incredibly rare, and only happen if you have recently been pregnant, you're on fertility medications containing hCG, or you have a rare medical condition that causes hCG to be present.
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A false-positive result indicates a pregnancy even though there isn't one. Rarely, the test may detect abnormal, non-pregnancy tissue, which requires follow-up by a doctor. These results are rare because usually only pregnant women produce the hCG hormone.
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Rarely, certain medical conditions can cause a home pregnancy test to give a false positive. These include: urinary tract infection. kidney disease that causes blood or white blood cells in the urine.