DoD Food Analysis and Diagnostic

 DoD FADL When to Use Chain of Custody

Last Updated: May 27, 2021
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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 usarmy.jbsa.medcom-ph-c.mbx.phcc-fadl-food-protection@mail.mil.


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