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Foodborne Outbreak Testing



Other Names Food Testing
How to Order
Fill out the information under FOOD/ ENVIRONMENTAL TESTING section of the General Microbiology Request Form.
Specify the Outbreak Number in the box provided for the Outbreak Number.
Notify the OSPHL General Microbiology Section before sending at 503-693-4100.
All clients with approval from the Oregon Public Health Division Acute and Communicable Disease Prevention Program.
Standard FDA/USDA/FERN and LRN reference procedures for culture and PCR
Daily, on regular business days
Time to Reporting
3 to 7 working days after receipt of specimen
CPT Code
87045, 87046, 87075, 87076, 87147, 87801

Specimen Collection Details

Food: Collect aseptically into a sterile container or submit in original container.
Stool: Submit specimen in enteric pathogen transport media (e.g., Cary Blair).
For S. aureus, B. cereus and C. perfringens, if stool is to be tested, submit raw stool in a sterile container with a screw top lid. Do not submit specimen in transport medium.
Optimal Volume
Food: 100-200g
Stool: approx. 5 ml/2 oz. in Enteric Pathogen Transport media
Raw stool: 50-10g (no transport media)
Minimum Volume
Food: 25 g
Stool: approx. 2g solid or 5mL liquid in Enteric Pathogen Transport media
Raw stool: 5g
Hold food or stool samples at refrigerated temperatures (2-8°C).
Unopened food packages submitted should include trand information, lot numbers, and expiration dates.
Do not freeze specimens for most testing. Frozen specimens are only acceptable for Listeria monocytogenes testing.
Transport specimens at refrigerated temperatures.
If specimen is frozen, maintain frozen temperatures during transport.
Rejection Criteria
Specimens without county or state epidemiology authorization.
Specimens frozen that are not being tested for Listeria monocytogenes are unacceptable for testing.
Specimens are subject to the requirements of the OSPHL Specimen Submission Policy and Criteria, available at:
For additional information or assistance, please contact the laboratory at 503-693-4100.