When to Use Chain of Custody for Samples Being Submitted
Chapter 6 of the DoD Food Analysis and Diagnostic Laboratory Submission Guide provides information on the use of the Sample Collection Chain of Custody (COC), DA Form 4137. A COC ensure integrity, accountability and documentation from time of sample collection until sample is processed at the laboratory. Additional questions concerning COC initiation can directed to FADL personnel at
COC is required for the following sample submissions:
- Suspected intentional contamination
- Criminal investigation
- Association with a food protection audit or food and water risk assessment (FWRA)
- Association with a foodborne illness investigation or foreign material determination.
- Analysis in accordance with a contract that specifies testing must be completed at DoD FADL