Routine stool culture includes Salmonella, Shigella, Campylobacter, pathogenic Yersinia and E. coli O157:H7. Culture for Vibrio is available upon request. Indicate if a specific pathogen is suspected as well as travel/ exposure history.
Aeromonas enteric culture from stool should only be performed when a history of travel or consumption of seafood is provided, when specifically requested by the ordering physician or as part of an investigation of an outbreak where standard procedures have failed to find the cause.
Clostridium perfringens enterotoxin (EIA) is routinely performed on all food-borne infections.
Screening for non-O157 shiga toxin producing E. coli (STEC) is available upon request. The Public Health Ontario Laboratory will test for non-O157 STEC on request from a patient who
- presents with acute bloody diarrhea or has hemolytic uremic syndrome (HUS) AND
- is negative for other enteric pathogens including E. coli O157.
The laboratory should be contacted prior to stool sample submission by contacting the PHOL Customer Service Centre (contact information below).
For outbreaks, contact your local Health Unit, your local Public Health Laboratory or the Public Health Ontario, Public Health Laboratory Customer Service at 416-235-6555 or 1-877-604-4567.