Enteric Bacteria – Speciation
|Test Requested||Required Requisition(s)||Specimen Type||Minimum Volume||Collection Kit|
Enteric bacteria identification
Pure viable subculture of organism on media that supports the growth1
Pure bacteria in appropriate agar plate, tube or swab for identification and speciation.
Submission and Collection Notes
Enter the name of the organism – Campylobacter, Salmonella, Shigella, E. coli O157, STEC, etc.
Preparation Prior to Transport
Label the specimen container with the patient’s full name, date of collection and one other unique identifier such as the patient’s date of birth or Health Card Number. Failure to provide this information may result in rejection or testing delay.
Specimens should be stored at 2-8°C following collection and shipped to PHOL on ice packs.
Test Frequency and Turnaround Time (TAT)
Enteric bacterial speciation is performed Monday to Friday.
Turnaround time is up to 10 days from receipt at PHO Laboratory.
Results are reported to the ordering physician or health care provider as indicated on the requisition.
Specimens that are positive for Salmonella, Shigella, Campylobacter, pathogenic Yersinia, E.coli O157:H7 and other shiga toxin producing E. coli, and Vibrio are reported to the Medical Officer of Health as per the Health Protection and Promotion Act.
Specimens are tested by conventional bacterial culture. Bacterial identification includes biotyping and serotyping procedures.
Screening of non-O157 shiga toxin producing E. coli (STEC) is performed by qPCR.
Antimicrobial susceptibility testing is routinely performed on Salmonella Typhi, Salmonella Paratyphi, Shigella, Vibrio and for clinical indications (from blood or sterile sites, infants <1 year old, immuno-compromised patients and hospitalized patients–if documented).
Antimicrobial susceptibility testing on other bacteria is available upon request.
Bacterial identification, confirmation and serotyping tests are applicable for Salmonella, Shigella, Campylobacter, pathogenic Yersinia, E.coli O157:H7 and non-O157 shiga toxin producing E. coli (STEC), Vibrio and other gram negative fermenters.
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.