rapid antigen test

Also found in: Acronyms.

rapid antigen test

Any laboratory test used to quickly identify the presence of a specific antigen in a body fluid sample.

Patient care

Rapid antigen tests are used to confirm diagnostic impressions or to screen large numbers of patients quickly for the possibility of infection. In rapid HIV antigen tests, a positive test is not considered definitive for infection: it requires confirmation with blood tests (serology). In screening for streptococcal pharyngitis (strep throat), clinicians often consider the test as adequate for immediate treatment even though false positive and negative results can occur.

Synonym: rapid antigen detection test
References in periodicals archive ?
The fifth approach, testing all patients with a rapid antigen test, treating those with a positive test with antibiotics, and performing a culture on those with a negative test, is a very popular approach.
The investigators performed throat cultures and rapid antigen tests and used clinical information to derive a clinical prediction score in each of 787 patients, aged 3-69 years, who presented with acute sore throat.
They determined the sensitivity and specificity of 4 testing strategies: single rapid antigen test (Genzyme OSOM Ultra Strep A Test[R]) performed in office; single rapid antigen test performed in laboratory (using the same rapid antigen test); result of either rapid antigen test; and single rapid antigen test in office plus culture.
Multiple blood, urine, and sputum cultures were unrevealing; rapid antigen test was positive for influenza A, with subsequent confirmation at the CDPH VRDL for novel influenza A (H1).
Last year, a group at Michigan State University, East Lansing, attempted to develop a rule for when to use a rapid antigen test versus when to culture a patient with pharyngitis for group A hemolytic streptococcus (GAS) infection, based on a cost analysis.
Detection sensitivity of polymerase chain reaction and rapid antigen test for H5N1 * Dilution ([dagger]) Test [10.
Not following a negative rapid antigen test for Streptococcus pyogenes with a traditional laboratory culture may put patients at risk for serious sequelae, Dr.
At my last count, there were at least 4 proprietary influenza surveillance systems, 2 associated with rapid antigen test kits and 2 associated with antiviral drdgs, as well as this new arrival (associated with a new antibiotic).
Contract Awarded for Advance the clinical development of its OraQuick Ebola rapid antigen test.
Elevated antistreptolysin-O (ASO) or anti-DNase B titers or evidence of GAS in the pharynx via a rapid antigen test or throat culture are indications to try empiric GAS therapy If the urticaria goes away and stays away, you've solved the problem.
In addition, 52 (13%) of the 388 physicians who reported using the rapid antigen test said they did not confirm a negative result with throat culture, as the clinical guidelines recommend.

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