Which culture media are used in the workup of bacterial gastroenteritis?

Updated: Jul 17, 2018
  • Author: Jennifer Lynn Bonheur, MD; Chief Editor: BS Anand, MD  more...
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The following is a list of the different culture media used to isolate bacteria. A high index of suspicion is needed to choose the appropriate medium.

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

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

  • XLD agar and HE agar - Inhibit gram-positive organisms and nonpathogenic gram-negative bacilli; permit lactose fermentation and H2S production

  • Skirrow agar - Selective for Campylobacter species

  • SM agar - Selective for enterohemorrhagic E coli

  • CIN agar - Selective for Y enterocolitica

  • Thiosulfate-citrate-bile-sucrose agar - Selective for Vibrio species

  • CCFE agar - Selective for C difficile

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