When to Use Chain of Custody for Samples Being Submitted
The AIPH (VET) MEMO B12-11 “Sample Collection Chain of Custody (COC)", 2 November 2012, provides information for the use of Chain of Custody documentation when submitting samples to USAPHC laboratories. A COC ensures integrity, accountability and documentation from the time of sample collection until the sample is processed at the lab. Questions regarding whether a particular sample needs a COC initiated can be directed to DoD FADL personnel.
A COC is required for the following sample submissions:
1. Initial audit
2. Special audit
3. Directed audit
4. Foods associated with a foodborne illness
5. Foreign matter determinations
6. Contractual compliance (for example, when DSCP requests testing for contract/specification requirements)
Special Note for Submitting Water for Radiological Testing
When submitting water for radiological testing in addition to any other requested micro/chemical testing, an additional COC document and DA Form 7539 must be submitted for the radiological sample. See the submission guide for additional information.