Summary
In short
- Undeclared allergens are consistently the leading cause of food recalls, and the mechanism is usually labelling or rework rather than inadequate cleaning.
- Rework is the single most common route by which an undeclared allergen reaches finished product. Like-into-like should be the default with documented exceptions.
- Production sequencing is a control that removes changeovers rather than verifying them: running allergen-free before allergen-containing eliminates the transfer route.
- Cleaning must be validated with an allergen-specific method for that protein on that equipment. Visual inspection and ATP do not detect allergenic protein.
- Artwork is the control point nobody in operations owns. A formulation change updates the specification, and the label frequently does not follow.
- The VITAL Program moved to version 4.0 in August 2024, adopting ED05-based reference doses, which affects precautionary labelling decisions made under earlier versions.
What it is
What it is
What is an allergen control plan?
The site-wide plan identifying which allergens are present, how they are segregated and controlled at each stage from receipt to despatch, how labelling accuracy is assured, and how cleaning and other controls are validated and verified.
What does it have to cover?
Receipt and storage, ingredient handling and decanting, production sequencing, changeover and cleaning, rework, equipment and utensil segregation, labelling and artwork control, training, and validation of the controls relied upon.
When to use it
When to use it, and when not to
This is the site-wide plan. Individual checks and assessments sit beneath it.
Use it for
- Mapping allergens present on site and the routes they can travel
- Defining segregation, sequencing, changeover and rework controls
- Establishing labelling and artwork control including the link from specification to label
- Setting validation and verification requirements for cleaning and other controls
- Reviewing after a new ingredient, supplier, product, process or equipment change
Not for
- The allergen changeover check, which verifies a specific changeover against this plan
- Label verification at the line, which is the final check before packing
- Cleaning validation studies, which are the technical evidence this plan references
- The HACCP plan, where allergen controls may appear as preventive controls
- Supplier approval, which addresses whether the supplier can meet the allergen requirement
Standards
What it is built against
Allergen control combines a labelling statute, a preventive controls requirement and scheme detail.
| Clause | Requirement | Where it lands |
|---|---|---|
| 21 CFR 117.135(c)(2) | Food allergen controls including preventing cross-contact and ensuring correct labelling | Controls through the process |
| FALCPA and FASTER Act | Declaration of major food allergens, with sesame added as the ninth from January 2023 | Allergens on site |
| 21 CFR 117.160 | Validation of preventive controls, providing scientific evidence the control is capable | Training and validation |
| BRCGS Issue 9 cl.5.3 | Allergen risk assessment, segregation, changeover procedures and validated cleaning | Controls through the process |
| SQF Edition 9 cl.2.8 | Allergen management including cross-contact controls, rework and validation | Header |
| EU Reg 1169/2011 | Fourteen allergens declared and emphasised in the ingredient list | Labelling |
| VITAL 4.0 | Quantitative basis for precautionary labelling using ED05 reference doses since August 2024 | Labelling |
| 21 CFR 117.150 | Corrective actions where a preventive control is not properly implemented | Training and validation |
What it does not cover
- The allergen changeover check, verifying a specific changeover against this plan.
- Label verification at the line, the final check before packing.
- Cleaning validation studies, the technical evidence this plan relies on.
- The HACCP or food safety plan, where allergen controls appear as preventive controls.
- Supplier approval, addressing whether the supplier meets the allergen requirement.
Filling it in
Filling it in well
Map the routes, control rework and artwork explicitly, and validate what you rely on.
Allergens travel on scoops, cloths, brushes, tote bins, aprons, gloves, hands and air. Line diagrams show fixed equipment and nothing else. Following a handful of an allergen from receipt to everywhere it could reach, physically, is twenty minutes and reliably finds a route the plan does not cover.
Like-into-like as the default: rework only into product with an identical or broader allergen profile. Any exception requires a documented decision rather than a supervisor judgement under production pressure. Rework held loosely, identified informally and used later is the most common route to an undeclared allergen in finished product.
Assign responsibility for ensuring that a formulation, supplier or ingredient change raises a review of every affected label. This is the control that prevents the leading recall mechanism, and it typically falls between technical, purchasing and marketing with no single owner. Naming that owner in the plan is the substance of it.
Running allergen-free products before allergen-containing ones eliminates the transfer route rather than verifying that cleaning removed it. Where scheduling allows, this is an engineering-level control implemented through planning, and it reduces the number of validated cleans the site depends on.
Audit findings
Common audit findings
Allergen findings concentrate on rework, artwork and validation.
| Finding | Clause | What fixes it |
|---|---|---|
| Rework used across products with differing allergen profiles. | 21 CFR 117.135 | Like-into-like default with documented exceptions; rework is the leading internal route. |
| No owner for the link from specification change to artwork review. | 21 CFR 117.135(c)(2) | Name the owner; this control prevents the leading recall mechanism. |
| Cleaning validated by visual inspection or ATP rather than protein testing. | 21 CFR 117.160 | Use an allergen-specific method; neither visual nor ATP detects protein. |
| Utensils, scoops and cloths shared across allergen and non-allergen areas. | BRCGS 5.3 | Colour code and segregate; these travel between lines outside any changeover control. |
| Production sequencing not used where scheduling would allow it. | SQF 2.8 | Sequencing removes the changeover rather than verifying it. |
| Sesame not covered by controls established before 2023. | FASTER Act | Reassess; older plans frequently predate its addition as the ninth major allergen. |
| Precautionary labelling applied without quantitative assessment. | VITAL 4.0 | Assess quantitatively; defensive labelling devalues the warning and attracts scrutiny. |
| Allergen profile not updated after a supplier change. | 21 CFR 117.135 | Like-for-like substitutions on price can change formulation silently. |
| Agency and night shift staff not trained on allergen controls. | SQF 2.8 | Changeovers and cleaning frequently happen at night with agency crews. |
| Storage segregation by convenience rather than by allergen. | BRCGS 5.3 | Segregate at receipt and in storage, including above and below in racking. |
Worked case
Case in point: the rework tub
A site with strong changeover controls, validated cleaning and protein testing at every changeover recorded an undeclared allergen incident. The changeover records were complete and correct throughout.
Product that failed a weight check was tipped into a rework tub at the end of the line and reintroduced at the start of the next compatible run. Compatibility was judged by an operator, on the basis of the product looking similar. On one occasion a product containing milk was reworked into one that did not declare it.
The allergen control plan covered receipt, storage, sequencing, changeover, cleaning and labelling in detail. Rework appeared in one sentence stating that rework should be like-for-like, with no definition of who decided, on what basis, or where the record was.
Definitions
Definitions and key terms
- Cross-contact
- Unintended transfer of allergenic protein from one food to another, distinct from microbiological contamination.
- Like-into-like rework
- Rework used only in product with an identical or broader allergen profile, the default control.
- Production sequencing
- Scheduling allergen-free before allergen-containing product, which removes the transfer route.
- Validated cleaning
- A cleaning method demonstrated by allergen-specific testing to remove the protein from that equipment.
- Artwork control
- The link ensuring that a formulation or ingredient change raises a review of every affected label.
- Precautionary allergen labelling
- A may-contain statement, appropriate only where quantitative assessment shows cross-contact cannot be excluded.
- Reference dose
- The protein amount predicted to cause a reaction in a stated proportion of the allergic population, now ED05 under VITAL 4.0.
- Segregation
- Physical separation of allergens in receipt, storage, handling and production, including vertically in racking.
FAQ
Frequently asked questions
Where do allergen recalls actually come from?+
Predominantly labelling and rework rather than cleaning. Undeclared allergens lead food recall causes consistently, and the typical mechanism is a formulation change correctly reflected in the specification and not reflected in label artwork created months earlier by a different team. Rework is the leading internal route by which an allergen physically reaches the wrong product.
Why is rework such a problem?+
Because it carries the allergen profile of whatever went into it directly into a later product, and it is usually controlled by a single sentence in the plan and a judgement made by whoever is at the line. It deserves the same specificity as changeover: what may go into what, who decides, how the container is identified, how long it may be held, and where the record is.
Can cleaning be verified visually?+
No. Allergenic protein persists at levels far below visual detection, and ATP indicates organic residue generally without distinguishing allergenic protein from other soil. Cleaning must be validated with an allergen-specific test method for that protein on that equipment, and verified at changeover using an appropriate method.
How does sequencing help?+
It removes the transfer route rather than verifying that cleaning eliminated it. Running allergen-free products before allergen-containing ones means the changeover requiring validated cleaning does not occur. Where scheduling permits, this is a higher-order control implemented through planning rather than through additional verification effort.
What changed with VITAL 4.0?+
Launched in August 2024, it adopted ED05-based reference doses in place of the ED01 values used previously, following the FAO/WHO Expert Consultation recommendation. Precautionary labelling decisions made under the earlier version rest on different numbers, and some products may no longer require a may-contain statement on a current assessment.
The agents
What the agents do with it
The plan maps routes across the site. What fails is rework in one sentence and artwork with no owner.
Holds the allergen profile per material and product, controls rework against like-into-like, and links specification changes to every affected label.
Watches ingredient and supplier changes for allergen profile impact, and raises artwork review rather than waiting for a periodic check.
Enforces segregation at receipt and in storage, including vertical separation in racking that plans frequently omit.
Covers allergen training for the people who actually perform changeovers and rework, including agency and night shift crews.
This template lives in KnowQuality — quality and food safety. HACCP, nonconformance, traceability, laboratory and customer complaints.
Sources
Sources
- 21 CFR 117.135 and 117.160, food allergen controls and validation, FDA
- FALCPA and the FASTER Act, major food allergen declaration including sesame
- BRCGS Food Safety Issue 9 clause 5.3, management of allergens
- SQF Edition 9 clause 2.8, allergen management
- VITAL Program version 4.0, Allergen Bureau, August 2024