Otolaryngology Book


Streptococcal Rapid Antigen Test

Aka: Streptococcal Rapid Antigen Test, Rapid Strep Test
  1. See Also
    1. Group A Streptococcal PCR (Point-Of-Care GAS Nucleic Acid Amplification Test)
    2. Throat Culture
    3. Group A Streptococcal Pharyngitis
    4. Pharyngitis
    5. Tonsillitis
  2. Indication
    1. Suspected Group A Streptococcal Pharyngitis
  3. 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)
  4. Efficacy
    1. Test Sensitivity: 80-86%
    2. Test Specificity: 96-98%

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