Food Microbiology Sample Submission Checklist

Submit sufficient quantity of samples
- Quantitative tests (reported as CFU/g or CFU/mL)
  - Minimum 50g food or a single sponge/swab for all tests
  - Examples: Aerobic Plate Count, Yeast/Mold, Coliform/E. coli
- Qualitative tests (reported as present or absent)
  - Minimum 50g food or a single sponge/swab for each pathogen test.
  - Examples: Listeria, Salmonella, E. coli O157:H7
Fill out a Chain of Custody (COC)
- Labels on samples match the sample ID/description on COC
- Tests codes are indicated on COC for ALL samples.
- Special instructions are added, if applicable (e.g., specifications, additional dilutions, composite sampling)
Properly package samples
- Prepare a clean insulated box
- Line the bottom with frozen cold packs (2 minimum)
- Place a layer of insulating material (e.g., bubble wrap)
- Insert samples in a sealable bag, seal tight, and place them in the box
- Place another layer of insulating material
- Line the top with another layer of frozen cold packs (2 minimum)
- Include a completed Chain of Custody form
- Seal the container • Apply shipping label and send out for overnight delivery

Notes

Keep environmental and finished product samples segregated (e.g., in separate sealable bags) to prevent cross-contamination.
Ambient samples do not require ice packs; however, exposure to extreme temperatures should be avoided.
Do not freeze refrigerated products.