Allergen labelling: when precautionary statements are justified

Precautionary allergen labelling is widely overused. Applied by default it dilutes its own meaning, removes choice from allergic consumers, and — increasingly — invites challenge from regulators.

A defensible process

1. Map every allergen present on site, including those in rework, processing aids and carriers.
2. Identify realistic cross-contact routes: shared lines, shared tooling, airborne dust, personnel movement.
3. Assess whether existing controls — sequencing, dedicated equipment, validated cleaning — reduce the risk to a level that does not require a statement.
4. Where residual risk remains, quantify it. Cleaning validation with allergen-specific swabbing or ELISA gives you a number rather than an opinion.
5. Only then apply a precautionary statement, and record the reasoning.

What auditors ask for

They ask why the statement is there, and expect the assessment behind it. "We put it on everything to be safe" is not an answer that survives scrutiny — and it is not a defence if a product is later found to contain an undeclared allergen.