is it possible to get a false positive herpes blood test?
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False positive results can occur with many diagnostic tests, including STD tests. The chances of false positive results increase as the likelihood of the infection decreases in the person being tested. False positive HSV-2 results can happen, especially in people who are at low risk for a herpes infection.
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If you have symptoms of HSV type 1 or 2, your doctor can diagnose a herpes infection by looking at your skin and/or by swabbing the sores to test for evidence of the herpes virus. If you do not have obvious symptoms, a blood test can help determine whether you have an infection.
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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. There's a higher risk of getting a false-negative result.
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Herpes Blood Tests Generally, it takes about two weeks for your body to produce detectable antibodies against herpes virus infection.
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The top three reasons you may get a false positive are: You've recently been pregnant. You've been taking fertility medications that contain hCG. You have a very rare medical condition, like ovarian cysts, that produce hCG and turn your result positive.
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The Centers for Disease Control and Prevention (CDC) indicates that the percentage for false positives is much higher. According to the CDC, about 35 percent of people with a low risk of infection, including blood donors, healthcare workers, and active or retired military personnel, receive a false-positive result.
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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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It may take between six and eight weeks to detect antibodies in a herpes blood test after first becoming infected with HSV. Also, antibodies may disappear with time, especially if the person has infrequent recurrences of herpes.
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Positive/Abnormal. It may mean you have an active infection (you currently have sores), or were infected in the past (you have no sores). If you tested positive for HSV, talk to your health care provider. While there is no cure for herpes, it hardly ever causes serious health problems.
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A false negative is a test result that says a person does not have HIV when, in fact, they do. False negative results most often occur when people test in the first few weeks after infection, during the 'window period' of a test.
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One reason for a false positive is the presence of another disease that produces antibodies similar to the ones produced during a syphilis infection. A few of the conditions that can cause a false positive include the following: HIV.
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A herpes IgM test is a type of blood test that can be used to detect early herpes (HSV) infection. This test does not detect herpes directly. Instead, it looks for a type of antibody that can be produced in response to a herpes infection, IgM.
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Herpes blood tests can be negative even though someone is actually infected.
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Data from the CDC suggest that for both STIs, a false positive is incredibly rare (99 percent of the time tests that come back negative are accurate). And if you do have the STI, it'll pick it up more than 90 percent of the time.
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if your symptoms are due to herpes. It may take between six and eight weeks to detect antibodies in a herpes blood test after first becoming infected with HSV. Also, antibodies may disappear with time, especially if the person has infrequent recurrences of herpes.
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A negative (normal) test most often means you have not been infected with HSV-1 or HSV-2. If the infection occurred very recently (within a few weeks to 3 months), the test may be negative, but you may still be infected.
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Among people who are in the secondary (middle) stage of infection, the RPR test result is nearly always positive. The RPR test also can produce false-positive results, suggesting you have syphilis when you actually don't.