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Throat Culture

Indication
1. Suspected Group A Streptococcal Pharyngitis
  1. Not recommended as primary test due to 24 hour delay
2. Confirmatory testing
  1. Negative Streptococcal Rapid Antigen Test
Technique
1. Requires 24 hour minimum for adequate growth
Accuracy
1. Highly dependent on technique
2. Single swab with single culture in adults
  1. Sensitivity: 90%
  2. Specificity: 99%

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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 8/14/2009. 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.