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Updated: Jan 25, 2026

Genotyping of Staphylococcus aureus by Ribosomal Spacer PCR RS-PCR
Published on: November 4, 2016
Chromagar™ requires secondary confirmation strategies to minimize false positive/negative results for detection of
Sirisha Sirobhushanam1, Navya Parsa2, Tamra J Reed1
1Department of Internal Medicine, Division of Rheumatology, University of Michigan, Ann Arbor, MI 48109, USA.
Abstract:
Chromagar is a medium that is used in culture-based colonization studies of Staphylococcus aureus. We have found that S. aureus negative colonies often fit the color recommendations for S. aureus identification and can cause overestimation of colonization rates. Confirmation of suspect colonies is important to minimize false negative/positive results.
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