The purpose of the present invention is to provide a detection means whereby Staphylococcus aureus can be identified at a high accuracy. An aspect of the present invention relates to a medium for detecting S. aureus which comprises one or more kinds of nutritional components, a color developing agent capable of developing a color in the presence of α-glucosidase, a color developing agent capable of developing a color in the presence of phosphatase and 0.5 mg/cm3 or more of sodium colistin methanesulfonate. Another aspect of the present invention relates to a sheet for detecting S. aureus, said sheet comprising the aforesaid medium, and a method for detecting S. aureus with the use of the medium and sheet as described above.
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