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The Wassermann test or Wassermann reaction (WR) [1] is an antibody test for syphilis, named after the bacteriologist August Paul von Wassermann, based on complement fixation. It was the first blood test for syphilis and the first in the nontreponemal test (NTT) category. Newer NTTs, such as the RPR and VDRL tests, have mostly
With nontreponemal tests, false-positive reactions can occur for a large number of reasons, the most common of which is other infections, both viral and bacterial. Additionally these tests may show false-negative when the patient's antibody titer is very high due to a hook effect (also called a prozone effect).
Results come back in a week or two, and patients are linked to health care resources if the test comes back positive. Even with these programs, syphilis testing can be overshadowed by more ...
Although it had some false positive results, it was a major advance in the detection and prevention of syphilis. [ citation needed ] By allowing testing before the acute symptoms of the disease had developed, this test allowed the prevention of transmission of syphilis to others, even though it did not provide a cure for those infected.
The test from NOWDiagnostics gives results in about 15 minutes; however, a positive result should be followed up with a visit to a medical professional in order to confirm the diagnosis.
Aug. 20—Amid a local and national surge of syphilis, the U.S. Food and Drug Administration this month approved an over-the-counter test for the sexually transmitted infection. While some may ...
The false positive rate (FPR) is the proportion of all negatives that still yield positive test outcomes, i.e., the conditional probability of a positive test result given an event that was not present. The false positive rate is equal to the significance level. The specificity of the test is equal to 1 minus the false positive rate.
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