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Streptococcal Rapid Antigen TestAka: Rapid Strep Test

Indication
1. Suspected Group A Streptococcal Pharyngitis
Methods
1. Extraction
  1. Enzyme extraction (more sensitive)
  2. Acid extraction (faster, usual testing method)
2. Identification
  1. Enzyme immunoassay (usual identification method)
  2. Latex agglutination (requires skill to interpret)
Accuracy
1. Acid extraction and Enzyme immunoassay
  1. Test Sensitivity: 80%
  2. Test Specificity: 98%

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This page was written by Scott Moses, MD. This page was last revised before 5/10/08, prior to consistent tracking of revision date. This page was last published on 5/10/2008. Please send comments and questions to the editor. Contact information may be found on the page About the Family Practice Notebook. These pages are best viewed with Microsoft Internet Explorer 6.0.