In a compliance audit this morning at a mid-size bakery, I asked for objective evidence that their allergen changeover was validated beyond ATP, and the room went quiet… If your hazard analysis flags cross-contact as a significant hazard, what method and acceptance criteria are you using post-clean (e.g., peanut ELISA <2.5 ppm on 3 targeted swabs), and how often are you re-verifying versus relying on SOPs?
At my last bakery, we validated peanut and milk changeovers with targeted ELISA on 5 sites (acceptance = ND at kit LOD, e.g., <2.5 ppm) plus a negative final-rinse composite, and re-verified quarterly or after any formula/equipment/chemistry change. Day-to-day we used allergen-specific LFDs on the two highest-risk spots as a surrogate, but if you go this route @AllergenGeek make sure the kit fits your matrix and backstop with ELISA on a rotating schedule.
, I know how frustrating it can be when there’s no solid evidence during audits. I once had a similar situation, and we implemented a routine check using both ATP and ELISA on our major allergen zones, doing it weekly. It caught a few potential cross-contact issues early on, and having that data made audits much smoother. @sophia_may99, what’s your take on testing frequency?
It’s tough when audits highlight those gaps. We found swabbing after the final rinse helped reassure our team. @sophia_may99, have you tried that?