What this is
What is an allergen changeover check?
What is an allergen changeover check?
The verification performed between production of a product containing an allergen and a product that does not declare it, confirming that cleaning removed the allergenic protein, that no material from the previous run remains, and that the line is released to start. It is a verification of a cleaning method that was validated separately.
What is the difference between validation and verification here?
Validation demonstrates, once and on change, that the cleaning method applied as specified actually removes the allergen to an acceptable level, using an allergen-specific test method. Verification confirms on each occasion that the validated method was followed and that the result is as expected. Sites frequently verify diligently against a method never validated.
Scope
When is an allergen changeover check required?
This check verifies a specific changeover. It sits downstream of the allergen risk assessment and upstream of label verification.
Use this template when
- Changeover from a product containing an allergen to one that does not declare it
- Changeover between products declaring different allergens
- Return to production after maintenance or engineering work in an allergen area
- Introduction of a new product or ingredient changing the allergen profile of the line
- After any deviation suggesting the previous changeover may not have been effective
Do not use it for
- The allergen risk assessment, which determines segregation, sequencing and which changeovers need what level of control
- Cleaning validation, which is performed once and on change to demonstrate the method works
- Label verification at pack, which is a separate final check against the production order
- The allergen profile register for materials and products, which the assessment draws on
- Rework authorisation, which is a decision record with its own approval requirement
Compliance mapping
Which FALCPA requirements does this satisfy?
Allergen control obligations combine a labelling statute, a preventive controls requirement and scheme detail that generally exceeds both.
| Clause | Requirement | Where it lands |
|---|---|---|
| 21 CFR 117.135(c)(2) | Food allergen controls including preventing cross-contact and ensuring correct labelling | Header |
| 21 CFR 117.145 | Monitoring of preventive controls with records | Verification |
| 21 CFR 117.150 | Corrective actions where a preventive control is not properly implemented | Release |
| FALCPA and FASTER Act | Declaration of major food allergens, with sesame added as the ninth from January 2023 | Header |
| BRCGS Issue 9 cl.5.3 | Allergen risk assessment, segregation, changeover procedures and validated cleaning | Cleaning |
| SQF Edition 9 cl.2.8 | Allergen management including cross-contact controls, rework and validation of cleaning | Line clearance |
| EU Reg 1169/2011 | Fourteen allergens declared and emphasised in the ingredient list | Release |
| VITAL 4.0 | Quantitative basis for precautionary labelling using ED05 reference doses since August 2024 | Release |
What it does not cover
- Cleaning validation, which demonstrates the method removes the protein and is performed once and on change.
- The allergen risk assessment, which determines sequencing, segregation and the controls this check verifies.
- Label verification at pack, which is the final check that the declared allergens match the product.
- Rework authorisation, which is a decision requiring approval where the like-into-like rule is departed from.
- Precautionary labelling decisions, which should follow a quantitative assessment rather than a changeover result.
How to complete it
How to complete an allergen changeover check, step by step
The check is short and the decision it supports is release to production, which makes the verification method the part that matters.
Protein-specific lateral flow or ELISA testing detects the allergen. ATP detects organic residue generally and will not distinguish peanut protein from soil, so it verifies that cleaning occurred rather than that the allergen is gone. Both have a place, and using ATP alone for an allergen changeover is a substitution that has caused recalls.
Line clearance and cleaning verification are different steps. Packaging, printed material, coded product and part-used ingredient from the previous run must be physically removed, because a swab result cannot detect a box of the wrong labels sitting under the bench. Clearance first, then cleaning verification, then release.
Which product ran before, which runs next, and what their allergen profiles are. A pass result means nothing without knowing which allergen was being removed and which product is at risk. This also makes the record usable during an investigation months later, when the run order is no longer obvious.
Rework from the previous run carries its allergen profile with it. The changeover check should confirm what happened to it: consumed in the same product, held for like-into-like use, or disposed. Rework held loosely and used later is where changeover control most often fails after the check has passed.
What auditors find
Most common allergen changeover check findings
Allergen findings are among the most consequential in food manufacturing, and they concentrate in a small number of places.
| Finding | Clause | What fixes it |
|---|---|---|
| Cleaning verified visually or by ATP alone for an allergen changeover. | BRCGS 5.3 | Use an allergen-specific test method; visual and ATP do not detect protein. |
| Cleaning method never validated for allergen removal. | SQF 2.8 | Validate once and on change; verification against an unvalidated method proves adherence only. |
| Rework used across products with differing allergen profiles. | 21 CFR 117.135 | Apply like-into-like as the default and require documented approval for exceptions. |
| Line clearance not performed before cleaning verification. | BRCGS 5.3 | Clear physically first; a swab does not detect the previous run's packaging. |
| Allergen profile not updated after a supplier or specification change. | 21 CFR 117.135 | Link specification changes to the allergen register so a new ingredient triggers reassessment. |
| Production sequenced without regard to allergen, creating avoidable changeovers. | SQF 2.8 | Sequence allergen-free before allergen-containing; removing a changeover beats verifying one. |
| Precautionary labelling applied without a quantitative assessment. | VITAL 4.0 | Assess quantitatively; defensive labelling devalues the warning and attracts regulatory attention. |
| Sesame not covered by controls established before 2023. | FASTER Act | Reassess; sesame became the ninth major allergen and older controls frequently omit it. |
| Changeover check signed without the sequence recorded. | 21 CFR 117.145 | Record previous and next product; a result without context cannot be interpreted later. |
| Utensils, scoops and cloths shared across allergen and non-allergen lines. | BRCGS 5.3 | Colour code and segregate; the changeover check does not cover what moves between lines. |
Case in point
Case in point: the clean line and the shared scoop
A bakery ran a validated changeover between a sesame-topped product and a plain loaf. The cleaning method had been validated with sesame-specific ELISA, swabs were taken at defined points every changeover, and results had never failed. The programme was well run and well documented.
A consumer reaction traced to the plain loaf. Investigation found that the flour scoop used at the mixing stage was shared across both products and stored in a common rack. The changeover check covered the line: mixer, conveyor, oven and packing. Nothing covered the scoop, because the risk assessment had been built around fixed equipment.
The changeover records were all accurate. They described a line that was genuinely clean and a control boundary that stopped one step upstream of where the allergen was travelling.
The template
The template, field by field
The form exactly as it installs. Every field, option, score and conditional rule is editable, and the links to other templates come with it.
5 sections
- Reference
- QUA-051
- Archetype
- Checklist
- Record ID
- CHK-2026-000
- Scoring
- Pass or fail
- Direction
- High is good
- Singleton
- No
- Basis
- FALCPA, SQF 2.8
- Links
- Links Allergen Plan, Job
- Tags
- Food safety, Allergen
- Sections
- 5
- Fields
- 49
- Follow up fields
- 11
- Repeating sections
- 0
- Links out
- 2
Header
16 fieldsCheck ID*
Auto sequence. Format CHK-2026-00000.
The record's own ID. Other templates point at this value.
Status*
Drives who this goes to next.
- Planned2 pts
- In progress2 pts
- Complete3 pts
- Deferred0 pts
- Open0 pts
- Closed3 pts
- Overdue0 pts
Date and Time*
Raised By*
Site*
Site ID*
Format SITE-000.
Links to FDN-001 Site ID
Line*
Shift*
Line Lead
Previous Product*
Previous Allergens*
Next Product*
Next Allergens*
Allergen Removal Required*
Yes where the previous run contained an allergen not present in the next.
Allergen Being Removed
Double Signed, No Exceptions
This check is signed by two people every time. One person checking their own work is how undeclared allergens reach consumers.
Cleaning
10 fieldsAllergen Clean Required For This Changeover*
Repeats the header assessment so the wet clean steps appear only when an allergen is being removed.
Full Wet Clean Completed
- Yes3 pts
- No0 pts
Clean Start Time
Clean End Time
Equipment Dismantled As Required
- Yes3 pts
- Partly1 pt
- No0 pts
Hard To Reach Areas Cleaned
- Yes3 pts
- Partly1 pt
- No0 pts
Overhead And Adjacent Cleaned
- Yes3 pts
- Partly1 pt
- No0 pts
Tools And Utensils Changed*
- Yes3 pts
- No0 pts
Protective Clothing Changed*
- Yes3 pts
- No0 pts
Air Lines Blown Down Where Safe
- Yes3 pts
- Not applicable3 pts
- No0 pts
Line clearance
6 fieldsPrevious Product Removed From Line*
- Yes3 pts
- No0 pts
Packaging Removed From Line*
- Yes3 pts
- No0 pts
Labels Removed And Reconciled*
- Yes3 pts
- Removed not reconciled1 pt
- No0 pts
Rework Segregated Or Removed*
- Yes3 pts
- No0 pts
Rework Destination Recorded
Bulk Bins And Hoppers Emptied*
- Yes3 pts
- No0 pts
Verification
8 fieldsVerification Method*
- Site visit4 pts
- Record review3 pts
- Photograph2 pts
- Statement only0 pts
Allergen Swab Taken*
- Yes3 pts
- Not required3 pts
- No0 pts
Number Of Swab Points
Swab Result
- Negative3 pts
- Positive0 pts
Swab Photo
Action If Positive
Recleaned And Retested
- Yes3 pts
- No0 pts
Retest Result
- Pass3 pts
- Fail0 pts
Release
9 fieldsLabel Check Completed*
- Yes3 pts
- No0 pts
Label Check ID
Links to QUA-016 Check ID
Recipe Matches Next Product*
- Yes3 pts
- No0 pts
Line Released*
- Yes3 pts
- No0 pts
Case ID
Thread key
First Checker*
Signature*
Second Checker*
Second Signature*
QUA-051 · record IDs look like CHK-2026-000 · Links Allergen Plan, Job
Open in KnowellaRun it with agents
From a document you fill in to a programme that runs itself
The check is a swab and a signature. What fails is the validation that never happened, the rework decision made under pressure, and the scoop that was never in scope.
Holds the allergen profile per material and product, links the changeover check to the sequence being run, and blocks release where validation for that pairing is absent.
Watches specification and supplier changes for allergen profile impact, and raises reassessment rather than waiting for the annual review.
Ties allergen training to the lines and products people actually work on, including agency and night shift staff who handle changeovers.
Flags maintenance in allergen areas as a changeover trigger, since engineering work reintroduces the need for verification before production resumes.
This template lives in KnowQuality — quality and food safety. HACCP, nonconformance, traceability, laboratory and customer complaints.
Meet KnowQuality→Glossary
Allergen Changeover Check definitions and key terms
- Cross-contact
- Unintended transfer of an allergenic protein from one food to another, distinct from contamination in the microbiological sense.
- Validation
- Demonstration that the cleaning method, applied as specified, removes the allergen to an acceptable level.
- Verification
- Confirmation on a given occasion that the validated method was followed and produced the expected result.
- Like-into-like rework
- Rework used only in product with an identical or broader allergen profile, the default rule for rework control.
- Reference dose
- The amount of allergen protein predicted to cause a reaction in a stated proportion of the allergic population, now ED05 under VITAL 4.0.
- ED05
- The eliciting dose predicted to produce objective symptoms in five percent of the allergic population, adopted by VITAL 4.0 in August 2024.
- Precautionary allergen labelling
- A may-contain statement, appropriate only where quantitative assessment shows cross-contact cannot be excluded below the reference dose.
- Line clearance
- Physical removal of all previous product, packaging, printed material and part-used ingredient before the next run.
FAQ
Frequently asked questions about allergen changeover check
Is visual inspection enough for allergen changeover?+
No. Allergenic protein remains at concentrations far below visual detection, and recalls have followed changeovers that were visually immaculate. Verification requires an allergen-specific method, protein lateral flow or ELISA, against a cleaning method validated for that allergen on that equipment.
Can we use ATP for allergen verification?+
ATP indicates organic residue and is well suited to rapid hygiene verification. It cannot distinguish allergenic protein from other soil and will not confirm the absence of an allergen. Using it as the sole allergen changeover verification substitutes a general cleanliness indicator for a specific protein test, which is a known cause of undeclared allergen incidents.
What changed with VITAL 4.0?+
Launched in August 2024, it adopted ED05-based reference doses in place of the ED01 values used in VITAL 3.0, following the FAO/WHO Expert Consultation recommendation to Codex. The expert review concluded that a reference dose below ED05 did not meaningfully reduce risk to allergic individuals while potentially reducing their food choice. In practice some products may no longer require precautionary labelling.
How should rework be handled?+
Like-into-like as the default: rework only into product with an identical or broader allergen profile. Any exception should require a documented decision with the allergen consequence assessed, not a supervisor judgement made under production pressure. Rework is the most common route by which an undeclared allergen reaches finished product.
Does the check cover utensils and small equipment?+
It should, and frequently does not. Risk assessments are usually built around fixed equipment because that is what appears on a line diagram, while allergens travel on scoops, cloths, brushes, tote bins and gloves. Following a handful of the allergen from delivery to everywhere it could reach is the quickest way to find the gap.
Keep going
Related templates and programmes
Industries this is written for
Programmes this belongs to
Used together in HACCP and Food Safety
Unannounced Audit Readiness Check
Checks whether the site would pass an audit arriving today, covering records, standards and area condition
Product Nonconformance Report
Records product that does not meet specification
Hold and Release Record
Places suspect product on hold and records the decision to release, rework or scrap it
HACCP Plan
The hazard analysis and critical control point plan for a product or process
HACCP Verification Record
Confirms the HACCP plan is being followed and still works
CCP Monitoring Log
Records readings at a critical control point, such as cook temperature, chill time or metal detection
More in Food Safety
HACCP Plan
The hazard analysis and critical control point plan for a product or process
HACCP Verification Record
Confirms the HACCP plan is being followed and still works
CCP Monitoring Log
Records readings at a critical control point, such as cook temperature, chill time or metal detection
Prerequisite Programme Plan
Sets out the basic conditions that must be in place for HACCP to work, covering hygiene, maintenance, pest control and training
Allergen Control Plan
Sets out how allergens are managed from receipt through to labelling, including segregation and changeover
Glass and Brittle Plastic Register
Lists every item of glass or hard plastic in production areas, with its location and condition
Written and reviewed by
Siddarth Singh
Founder & Chief Executive Officer, Knowella
Certified Safety Professional and industrial and systems engineer with more than a decade inside food supply chain, freight and manufacturing operations. This page was written against the current text of the standards it cites, not against secondary summaries of them.
- Certified Safety Professional (CSP), Board of Certified Safety Professionals
- MBA, University of Chicago Booth School of Business
- MS and BS, The Ohio State University, Industrial and Systems Engineering
- Six Sigma Black Belt
Sources and last review. Reviewed 16 August 2026 against:
- 21 CFR 117.135, preventive controls including food allergen controls, 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
This page is general guidance, not legal advice. Confirm requirements with your jurisdiction’s regulator.