Regulatory audits rarely fail on headline metrics alone; they fail when paperwork cannot explain how a sample moved from line to lab. This playbook distils what we see working across dairy, beverages, and RTE categories with Litmus partner labs.
Batch IDs must reconcile before inspectors knock
First, reconcile batch IDs between production logs and dispatch manifests. Mismatches here are the fastest path to non-conformities, especially when subcontract labs handle overflow capacity. Export a single worksheet joining ERP batches to courier airway bills — ambiguity kills credibility.
Laboratory scope vs. your COA request
Confirm that the nominated laboratory’s NABL scope lists the exact matrix and method cited on your certificate of analysis request. If scope differs even subtly, plan for referral routing before the audit window — never assume ‘they’ve done it before.’
Rehearse deviations — calmly
Rehearse your escalation tree: who signs deviation notes, who speaks to the auditor, and how quickly digital copies of reports can be retrieved. Teams that drill these paths sleep better on audit eve.
Cold-chain artefacts auditors actually open
Stress-test cold-chain evidence for fragile assays. Export temperature traces alongside timestamps that align with rider check-ins — auditors increasingly ask for both. If your IoT vendor truncates exports, fix it before Q3.
