Morganella Infections Workup

Updated: Feb 24, 2023
  • Author: Shirin A Mazumder, MD, FIDSA; Chief Editor: Pranatharthi Haran Chandrasekar, MBBS, MD  more...
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Laboratory Studies

Identification of M morganii is made by recovery of small oxidase-negative catalase and indole-positive gram-negative rods on blood agar or MacConkey agar.

M morganii ferments glucose and mannose but not lactose.

M morganii is motile, facultatively anaerobic, and nonencapsulated, and it hydrolyzes urease and reduces nitrates.

Unlike Proteus species, swarming does not occur.

M morganii urinary tract infections are often associated with an alkaline urine pH.