Which culture mediums are used to isolate bacteria in the workup of diarrhea?

Updated: Jan 31, 2020
  • Author: Stefano Guandalini, MD; Chief Editor: Carmen Cuffari, MD  more...
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See the list below:

  • Culture mediums used to isolate bacteria include the following:

    • Blood agar - All aerobic bacteria and yeast; detects cytochrome oxidase production

    • MacConkey EMB agar - Inhibits gram-positive organisms; permits lactose fermentation

    • XLD agar; HE agar - Inhibits gram-positive organisms and nonpathogenic GNB; permits lactose fermentation H2S production

    • Skirrow agar - Selective for Campylobacter species

    • SM agar - Selective for enterohemorrhagic E coli

    • CIN agar - Selective for Y enterocolitica

    • TCBS agar - Selective for Vibrio species

    • CCFE agar - Selective for C difficile

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