can you get a false positive blood test for pregnancy?
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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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A pregnancy test works by detecting the hCG hormone, which is usually only present in your body if you're pregnant. A positive pregnancy test result will mean you are almost certainly pregnant. Getting a true false positive – when you were never pregnant in the first place – is incredibly rare.
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Although rare, it's possible to get a positive result from a home pregnancy test when you're not actually pregnant. This is known as a false-positive.
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Most medicines, over-the-counter and prescription, including birth control pills and antibiotics, should not affect the results of a home pregnancy test. Only medicines that have the pregnancy hormone hCG in them can give a false positive test result.
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This is known as a false-positive. A false-positive might happen if you had a pregnancy loss soon after the fertilized egg attached to your uterine lining (biochemical pregnancy) or you take a pregnancy test too soon after taking a fertility drug that contains HCG.
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A blood test can detect pregnancy even before you've missed a period. Pregnancy blood tests are about 99 percent accurate. A blood test is often used to confirm the results of a home pregnancy test.
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False negative results (test is negative, but you are actually pregnant) usually occur if the blood pregnancy test was performed too early (a rule of thumb is that it takes at least 7 days after conception for the test to show a positive result).
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Positive Result A positive bleach pregnancy test indicates that you are pregnant. A false positive pregnancy result is when the pregnancy test shows positive, but you are not actually pregnant. If you leave the mix for too long, it will froth due to other reasons.
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False negative pregnancy tests are much more common than false positives. While a urinary tract infection (UTI) is unlikely to cause a false negative it could do so, at least in theory. If you have a UTI, see a doctor and then retake the test a few days later.
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It's possible to have a positive pregnancy test even if you aren't technically pregnant. This is called a false positive. It's sometimes caused by a chemical pregnancy. A chemical pregnancy occurs if a fertilized egg, known as the embryo, is unable to implant, or grow, very early on.
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Could a positive result be wrong? Although rare, it's possible to get a positive result from a home pregnancy test when you're not actually pregnant. This is known as a false-positive.
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Most home pregnancy tests are reliable, for example Clearblue's tests have an accuracy of over 99% from the day you expect your period, and while it's possible a test showing a negative result is wrong, particularly if you're testing early, getting a false positive is extremely rare.
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There are some medical conditions that can lead to you seeing a false positive pregnancy test result. The most likely reason is blood or protein in your urine. Blood can be the result of having a urinary tract infection. The presence of protein is more serious; this indicates kidney problems.
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False positives are rare. If you take a test and it's negative and then take another test a few days apart and it's positive, it's possible you are pregnant and just didn't have enough hormones in your urine when tested earlier.
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False negative pregnancy tests do occur. In fact, it is possible to have a negative result on a pregnancy test and actually be pregnant.
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Because hCG is usually only present in your body when you're pregnant, false positive results are incredibly rare. If you use a reliable pregnancy test, like Clearblue, you can be over 99% certain you're pregnant if you see a positive result.
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Cue: panicked visit to your ob/gyn, only to learn that you're actually not pregnant and had nothing to stress about. Thankfully, false-positive pregnancy tests are rare, but they can happen. Here are some of the most common causes of a false-positive pregnancy test.