The Chain of Custody (COC) is used to document information about the sample(s) such as identification/name, time/date of collection, parameter requests, and the legal transfer of sample custody. It’s a critical step in the sample testing process—one that environmental professionals know can impact results.
Properly completed COC forms avoid potential delays and incorrect or incomplete analysis. They also ensure regulatory compliance requirements are met.
Your Chain-Of-Custody Checklist
The following lists critical information we see most commonly missing on COCs.
- Sample ID – Should match sample ID, date, and time written on the sample container(s)
- Date and Time of Collection – Should match sample ID, date, and time written on the sample container(s)
- Project Manager/Company
- Project Information
- QAQC Reporting Level
- Date Needed
- Relinquishing signature, date, and time – This is the most missed section!
Setting your projects up for success means taking the time to complete the COC form accurately! Accurate and complete COC forms will minimize potential issues that could impact your projects.
Instructions for completing the COC form (particularly helpful for new employees and field techs!) are available here—but if you have any questions about completing your form or regarding our laboratory services, we’re happy to assist you.
Please call 1-800-287-0525 or email us to get in touch with us!