how accurate are rapid mono tests?
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In addition to varying sensitivity rates of detecting heterophile positive IM, the monospot test is unable to identify cases of heterophile negative IM. Approximately 90% of IM cases are caused by EBV.
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Tests and diagnosis Glandular fever can be diagnosed with a simple blood test called a mono spot test, which tests for antibodies to the Epstein-Barr virus. However, the mono spot test may not detect the infection during the first week of the illness.
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When to Call Your Doctor You have mono symptoms for longer than 10 days or you have a severe sore throat for more than a day or two. Your doctor will want to rule out other illnesses, such as strep throat. You have a severe headache that won't go away and a stiff neck, which might be signs of meningitis.
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The signs and symptoms of mono typically last for 1 to 2 months. The incubation period may be shorter in young children. Some symptoms, like sore throat and fever, typically lessen after 1 or 2 weeks. Other symptoms such as swollen lymph nodes, fatigue, and an enlarged spleen may last a few weeks longer.
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Between 7 and 20 weeks, accuracy for these blood-based tests ranged from 95-98%, depending on the specific techniques employed and the baby's actual sex. (The tests were more accurate when they use a DNA amplification technique known as real-time quantitative polymerase chain reaction.)
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Rapid Influenza Testing The diagnostic accuracy of influenza swabs is often overestimated by clinicians. The CDC notes that rapid influenza testing has a sensitivity ranging from approximately 50% to 70% — meaning that in up to half of influenza cases, the flu swab results will still be negative.
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The Rapid test is just as accurate as a Standard HIV test. If you test negative, then you do not require any further tests. If you are positive, then you will need a further blood test using a specimen that needs to be sent to a laboratory.
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HIV tests are between 99% and 100% reliable. Newer, so-called combination or fourth generation tests and other lab-based tests are close to 100% accurate. Rapid or at-home tests are right around 99% of the time if you've been infected for a while.
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But they may not know that they have the virus at first. That's because it takes a while from the time someone gets infected to the time symptoms of mono (like tiredness, fever, muscle aches, headache, or sore throat) show up — about 4 to 7 weeks in fact. This is called the incubation period.
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If heterophil antibodies are present, the blood clumps (agglutinates). This result usually indicates a mono infection. Monospot testing can usually detect antibodies 2 to 9 weeks after a person is infected. It typically is not used to diagnose mono that started more than 6 months earlier.
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A lot of doctors will do blood tests to confirm mono, though. If someone has symptoms of mono, the doctor may order a complete blood count to look at the lymphocytes, a type of white blood cell that shows specific changes when a person has mono. A doctor may also order a blood test called a monospot.
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The most common are called “rapid influenza diagnostic tests (RIDTs).” RIDTs work by detecting the parts of the virus (antigens) that stimulate an immune response. These tests can provide results within approximately 10-15 minutes, but are not as accurate as other flu tests.
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Test results are usually available in about 15 minutes. If the rapid strep test indicates a strep infection, the doctor usually will prescribe antibiotics.
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Yes. Modern HIV tests are very accurate. A confirmatory test three months after the exposure is always recommended. This is because 5% of people take this long to show a positive result. A positive test result is routinely confirmed using a different type of test called western blot.
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Simple tests are ready the same day, if not within a few hours. If we're looking for bacteria, we'll know the results within 72 hours. Other, more demanding tests may be ready in a matter of days or weeks; and specific biochemical tests that are looking for certain antibodies may take six to eight weeks to come back.
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If the rapid strep test indicates a strep infection, the doctor usually will prescribe antibiotics. Keep in mind, though, that up to a third of negative rapid strep test results are false (meaning someone actually has a strep throat infection even though the rapid strep results were negative).