WebAug 7, 2024 · A false-negative result signifies a RT-PCR test’s inability to detect the virus in a person with an active infection. Tests Detect … WebA positive ZIKV ribonucleic acid test (RNA NAT) in serum [5,7], urine [], or cerebrospinal fluid (CSF) confirms CZS.A positive ZIKV IgM [5,7] in cases in which ZIKV RNA NAT was negative or was not performed should be considered a likely CZS case due to a possible cross-reaction with other flaviviruses (false-positive result).In this situation, a plaque …

FACT SHEET FOR HEALTHCARE PROVIDERS - Food and Drug …

WebMay 7, 2024 · A false positive means that the test shows a positive result, but in reality it should be a negative result. This means that a patient may be told that they have COVID-19, but they actually do not. WebFeb 24, 2024 · The test result may be wrong, known as a "false negative." This occurs when the test does not detect antibodies even though you may have antibodies for SARS-CoV-2. hercules south cerney

Understanding Medical Tests and Test Results

WebIn this case, positive doesn’t necessarily mean “good” and negative doesn’t necessarily mean “bad.”. Instead: Positive: The lab found whatever your doctor was testing for. So if … WebAug 6, 2024 · Ask the people being tested to limit their fluid intake before the test. Ask them to avoid diuretics, like coffee and tea, before giving a sample. Collect the urine early in the morning. If their ... WebA negative result doesn’t necessarily mean that you don’t have HIV. That’s because of the window period — the time between HIV exposure and when a test can detect HIV in your body.. If you get an HIV test after a potential HIV exposure and the result is negative, get tested again after the window period for the test you took. hercules sons names