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The test uses a single drop of blood obtained from a finger prick and yields results in 20 minutes. The sensitivity of this test is 98.03% while the specificity is 99.56%. [1] This test is paired with an easy-to-use mobile app which allows a trained professional to generate an antibody test certificate for storing on a person's smartphone. [1] [2]
Antigen tests can be analyzed within a few minutes. Antigen tests are less accurate than PCR tests. It has a low false positive rate, but a higher false negative rate. A negative test result may require confirmation with a PCR test. [8] Advocates claim that antigen tests are less expensive and can be scaled up more rapidly than PCR tests. [8]
In immunology the particular macromolecule bound by an antibody is referred to as an antigen and the area on an antigen to which the antibody binds is called an epitope. In some cases, an immunoassay may use an antigen to detect for the presence of antibodies, which recognize that antigen, in a solution.
Antigen tests produce results quickly (within approximately 15–30 minutes), and most can be used at the point-of-care or as self-tests. Self-tests are rapid tests that can be taken at home or anywhere, are easy to use, and produce rapid results. [58] Antigen tests can be performed on nasopharyngeal, nasal swab, or saliva specimens. [15]
The tracer and the specific antigen will compete to bind to the antibody and if the antigen is low in concentration, more tracer will be bound to the antibody resulting in a higher fluorescence polarization and vice versa. [7] A conventional FPIA follows the procedure below: A specific quantity of sample is added to reaction buffer.
The mononuclear spot test or monospot test, a form of the heterophile antibody test, [1] is a rapid test for infectious mononucleosis due to Epstein–Barr virus (EBV). It is an improvement on the Paul–Bunnell test. [2] The test is specific for heterophile antibodies produced by the human immune system in response to EBV
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