Summary
In short
- Undeclared allergens led FDA recall causes again in 2025, accounting for around 34 percent of recalls. Counts vary by source and scope, but the ranking has been consistent for a decade.
- Milk is the most frequently undeclared allergen, followed by tree nuts, wheat, eggs and sesame.
- The typical mechanism is not contamination. A formulation changes, the specification is updated, and the label artwork, created months earlier and managed by a different team, is not.
- Verification must be against the production order. Checking the new label against the previous run confirms errors rather than detecting them.
- For allergen-relevant changes, a second independent check is warranted, because the consequence of a miss is a recall rather than a rework.
- Date coders drift and reset unpredictably, which is why the code is verified at start, after any stoppage and at run end rather than once.
What it is
What it is
What is a label verification check?
A verification at the point of pack that the label loaded on the line is the correct label for the product being produced, checked against the production order rather than against the previous run. It covers the label itself, the date code, and confirmation that no packaging from a previous product remains on the line.
Why check against the order rather than the previous run?
Because checking against what ran before propagates an error rather than catching it. If the previous run was wrong, verifying the new label matches it confirms the mistake. The production order is the independent reference, and it is the only comparison that can detect an error already in the system.
When to use it
When to use it, and when not to
This is the final check before product is packed. It sits after the changeover controls and before despatch.
Use it for
- Start of every production run, before the first case is packed
- After any stoppage where the coder or label reel may have been changed or reset
- Following a product changeover, in addition to the allergen changeover check
- At run end, to confirm the code was still correct on the last case
- Whenever the label reel is replaced mid-run
Not for
- Artwork approval, which controls the label design and its version before it ever reaches the line
- The allergen changeover check, which verifies cleaning and clearance rather than label correctness
- Label reconciliation at run end, which accounts for quantity issued against quantity used
- Specification management, which holds the declared ingredients the artwork must reflect
- Despatch documentation checks, which verify the paperwork accompanying the load
Standards
What it is built against
Label accuracy is governed by a labelling statute, a preventive controls requirement and scheme detail on line clearance and verification.
| Clause | Requirement | Where it lands |
|---|---|---|
| 21 CFR 117.135(c)(2) | Food allergen controls ensuring the finished food is not misbranded under section 403(w) | Header |
| 21 CFR 117.145 | Monitoring of preventive controls with records signed and dated | Sign off |
| 21 CFR 101 | Food labelling requirements including ingredient declaration, allergens and net quantity | What should be running |
| 21 CFR 211.130 | Packaging and labelling operations with line clearance to prevent mixups (pharmaceutical parallel) | Line clearance |
| BRCGS Issue 9 cl.6.3 | Label and print control including checks at start, changeover and end of run | What is actually loaded |
| SQF Edition 9 | Label verification and reconciliation, with records of checks performed | Sign off |
| EU Reg 1169/2011 | Mandatory particulars, allergen emphasis and legibility requirements | What should be running |
| 9 CFR 412 | Label approval for meat and poultry products, including generic approval limits | What should be running |
What it does not cover
- Artwork approval and version control, which governs the label design and is where most root causes actually sit.
- Specification management, which holds the declared ingredients and allergens the artwork must match.
- The allergen changeover check, which verifies cleaning and clearance rather than label correctness.
- Label reconciliation, which accounts for quantities issued and used and detects surplus in circulation.
- Obsolete packaging destruction records, which prevent superseded labels returning to the line.
Filling it in
Filling it in well
Ninety seconds, four things to establish, and one of them is the reference the check is performed against.
Establish what should be running from the production order and the current specification before looking at what is loaded. Reading the line first anchors the checker on what is there, and the human tendency is then to confirm it. Order first, line second, is a small sequencing point with a measurable effect on detection.
The most consequential label errors are correct-product, wrong-version: artwork that predates a formulation change and no longer declares an ingredient that is now present. The product name matches, the design matches, and the allergen declaration is wrong. Checking the allergen statement specifically against the current specification is what catches it.
Where the changeover involves a difference in declared allergens, an independent second check is proportionate, because the consequence of a miss is a recall. It should be genuinely independent: a second person reading the order themselves, not countersigning the first person's conclusion.
Date coders drift, reset after power interruptions and revert to defaults after maintenance. A code verified once at start can be wrong for most of the run. Checking after any stoppage and again at run end brackets the production and limits how much product a coding failure can affect.
Audit findings
Common audit findings
Label findings are heavily represented in recall causes, and the root cause usually sits upstream of the check.
| Finding | Clause | What fixes it |
|---|---|---|
| Verification performed against the previous run rather than the production order. | BRCGS 6.3 | Make the order the reference; comparison to the last run cannot detect an existing error. |
| Artwork not updated after a formulation or supplier change. | 21 CFR 117.135 | Link specification change to artwork review so a spec update flags every affected label. |
| Only the product name checked, not the allergen declaration. | 21 CFR 101 | Check the declaration against the current specification; wrong-version artwork passes a name check. |
| No second check for allergen-relevant changeovers. | SQF 2.8 | Require an independent second reading where declared allergens differ between runs. |
| Date code verified only at start of run. | BRCGS 6.3 | Verify after stoppages and at run end; coders drift and reset. |
| Obsolete labels retained in stores and available to the line. | BRCGS 6.3 | Destroy with evidence; retained obsolete stock is a live risk that grows as the reason is forgotten. |
| Line clearance not completed before the check. | 21 CFR 211.130 | Clear physically first; a label check does not detect a box of previous packaging under the bench. |
| Label reconciliation showing unexplained surplus. | SQF | Investigate; surplus labels are in circulation somewhere, usually the next run. |
| Check signed retrospectively at end of shift. | 21 CFR 117.145 | Capture at the point of the check; a retrospective signature is not monitoring. |
| Checker unable to access the current specification at the line. | 21 CFR 101 | Make the specification available at the point of check; a reference nobody can reach is not a reference. |
Worked case
Case in point: the label that was right six months ago
A prepared foods manufacturer reformulated a dressing, replacing one thickener with another that carried soy. The specification was updated correctly and approved. The change went through the system, and the recipe on the line reflected it.
The label artwork had been created eight months earlier. It lived in a shared drive, was managed by the marketing team through an external design agency, and nothing in the specification change reached it. The label was the correct label for that product by name, by design and by every check the line performed. It did not declare soy.
The check at the line was performed diligently every run against the production order, which named the product correctly. Neither the order nor the checker had any way to know that the artwork predated the formulation.
Definitions
Definitions and key terms
- Misbranding
- A product whose label fails to declare a major food allergen or otherwise does not meet labelling requirements, regardless of whether contamination occurred.
- Line clearance
- Physical removal of all previous product, packaging, printed material and coded product before the next run starts.
- Artwork version control
- Management of label design versions with effective dates, linking each to the specification it reflects.
- Label reconciliation
- Accounting for labels issued against those used, scrapped and returned, where unexplained surplus indicates labels in circulation.
- Wrong-version artwork
- A label correct for the product by name and design but predating a formulation change, so the declaration is out of date.
- Independent second check
- A second person reading the source reference themselves, distinct from countersigning another person's conclusion.
- Date coder drift
- Progressive or sudden deviation of a printed code, commonly after power interruption, maintenance or reel change.
- Obsolete packaging
- Superseded labels and packaging that must be withdrawn and destroyed with evidence rather than retained.
FAQ
Frequently asked questions
How common are labelling recalls?+
They are consistently the leading cause. Undeclared allergens accounted for around 34 percent of FDA recalls in 2025, and the ranking has held for a decade. Total counts vary between sources depending on scope and whether FDA and USDA figures are combined, but the pattern does not: labelling failures cause more recalls than contamination does.
Which allergens appear most often?+
Milk leads by a considerable margin, followed by tree nuts, wheat, eggs and sesame. Milk's prominence reflects both how widely it is used and how easily a dairy-containing ingredient enters a formulation without the declaration following.
What is the usual root cause?+
Not contamination. A formulation changes through a new ingredient, a supplier swap or a recipe tweak; the specification is updated; and the label artwork, created months earlier and often managed by a different team through an external agency, is not. The connection between specification and artwork exists in principle and depends on someone remembering to check.
Can the line check prevent that?+
No, and this is worth being clear about. The line check verifies that the correct label was loaded against the production order. It cannot detect that the correct label is itself out of date. The control for wrong-version artwork sits upstream, in a link from specification change to artwork review that raises every affected label automatically.
When should a second person check?+
Wherever the changeover involves a difference in declared allergens. The check should be genuinely independent, meaning a second person reading the production order and specification themselves rather than countersigning. The cost is a minute; the consequence of a miss is a recall and, potentially, a reaction.
The agents
What the agents do with it
The check is ninety seconds at a line start. What fails is upstream: the artwork that never heard about the specification change.
Links the specification to the artwork version, so a formulation change raises every affected label for review rather than depending on someone remembering.
Presents the current declaration at the point of check, so the person at the line compares against the live specification rather than a printed order alone.
Reconciles labels issued against used and returned, so unexplained surplus is investigated before it reaches the next run.
Confirms that whoever performs the check, including agency and night shift staff, has been trained on what the declaration must contain.
This template lives in KnowQuality — quality and food safety. HACCP, nonconformance, traceability, laboratory and customer complaints.
Sources
Sources
- 21 CFR 117.135, food allergen preventive controls, FDA
- 21 CFR Part 101, food labelling, FDA
- FDA and USDA recall data for 2025 as reported by Food Safety Magazine and USDA FSIS
- BRCGS Food Safety Issue 9 clause 6.3, label and print control
- Regulation (EU) 1169/2011 on the provision of food information to consumers