Otolaryngology Book

http://www.fpnotebook.com/

Streptococcal Rapid Antigen Test

Aka: Streptococcal Rapid Antigen Test, Rapid Strep Test
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  1. Indication
    1. Suspected Group A Streptococcal Pharyngitis
  2. 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)
  3. Accuracy
    1. Acid extraction and Enzyme immunoassay
      1. Test Sensitivity: 80%
      2. Test Specificity: 98%

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