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what type of reaction is used to identify streptococcus with the direct antigen rapid streptococcus test
A rapid streptococcus antigen test is used to quickly diagnose strep throat, a contagious infection of the pharynx caused by a Group A streptococcus (Streptococcus pyogenes), commonly referred to as GAS. [ These migrate along the membrane until they reach the reaction zone containing immobilized antibodies to the same Group A strep antigen. These antibodies capture the antigen-antibody complexes, forming a colored band or line (usually pink or blue) in the reaction zone area. Specificity of these tests is approximately 97-98%. Few causes of false positives have been reported. False
positives are possible when the patient's throat contains a heavy growth of Staphylococcus aureus. False-negative test results are commonly reported and often occur when insufficient antigen is obtained from the swab extraction procedure. ]
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Expert answered|jeifunk|Points 6636|
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Asked 9/18/2012 5:25:31 PM
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