PFAS in Food Packaging: FDA's Authorization Revocation and What It Means for Your Testing Program

In April 2024, FDA finalized a rule revoking every previously authorized use of PFAS in food contact applications. Grease-resistant coatings on paperboard. Processing aids. Surface lubricants on food-handling equipment. Decades of accumulated approvals under 21 CFR Parts 175, 176, 177, and 178 — eliminated in a single regulatory action. Manufacturers who had been relying on those authorizations to justify PFAS-containing packaging were given transition windows ranging from 18 months to 2 years to find alternatives.

For most categories, that clock has nearly run out.

And yet, in conversations with food manufacturers and co-packers across the country, we keep running into the same problem: companies that know the rule exists but haven’t actually verified whether their current packaging is compliant. They’ve received assurances from their packaging suppliers. They’ve seen certificates of conformance. But they haven’t done independent analytical testing to confirm that PFAS — all 12,000+ identified compounds — aren’t migrating into their product.

That’s a significant gap. And it’s one that enforcement actions will eventually find.

What FDA Actually Revoked — and What the Compliance Clock Looks Like

The FDA’s final rule, published in the Federal Register on April 28, 2024, revoked authorization for PFAS as food contact substances under the Federal Food, Drug, and Cosmetic Act. This wasn’t a proposal or a voluntary phase-out request. It was a binding regulatory action, effective immediately for new uses and with staggered transition periods — up to 24 months for some existing uses — which puts the final compliance deadline squarely in 2026 for most applications.

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The rule specifically targeted PFAS used in paper and paperboard food packaging, which has historically been the dominant application. Pizza boxes, microwave popcorn bags, take-out containers, fast food wrappers, and the greaseproof paper used in bakery and deli applications all fall under its scope. These materials rely on fluorinated coatings to resist oil and moisture, and that chemistry is precisely what makes them a migration concern.

It’s worth being clear about what the revocation does not address: PFAS that reaches food through other pathways. Contaminated water used in food processing. Soil and groundwater contamination at agricultural sites. Carry-over through the broader supply chain. The FDA action was specifically about food contact material authorizations. Companies that assume they’re covered simply because they’re not using fluorinated packaging are missing the larger picture — and the testing obligation that comes with it.

How PFAS Gets Into Food — and Why “PFAS-Free” Packaging Claims Are More Complicated Than They Look

Migration is the mechanism. When food contacts a PFAS-treated surface, fluorinated compounds transfer into the food matrix, driven by temperature, contact time, fat content, and pH. Fatty foods like cheeses, processed meats, and fried items carry the highest risk — lipophilic compounds partition preferentially into fat. Acidic foods accelerate migration from certain coating chemistries. Microwave conditions, where both heat and moisture are involved simultaneously, are the most aggressive migration environment in typical consumer use.

A 2021 study published in Environmental Science & Technology Letters found detectable PFAS in food samples collected from quick-service restaurants, with concentrations ranging from approximately 3 to over 300 parts per trillion depending on the food type and packaging involved. Grilled chicken and fried items showed higher migration than items with less direct surface contact. The data suggests that even short-duration contact with PFAS-containing packaging is sufficient to produce measurable food contamination under realistic service conditions.

This brings us to the “PFAS-free” claim problem. Since the FDA revocation, the packaging industry has responded with an avalanche of PFAS-free marketing language. But there’s no regulatory definition for what that phrase actually means in this context. Some suppliers use it to indicate no intentionally added PFAS. Others have switched to fluorine-free alternatives — bio-based coatings, modified starches, silicone treatments — that represent genuine chemistry changes. A smaller number are marketing products as PFAS-free based on supply chain disclosures rather than analytical verification.

The problem is that a supplier’s Certificate of Analysis or Safety Data Sheet cannot distinguish between these scenarios at the detection level. We’ve reviewed supplier documentation from more than a dozen packaging vendors over the past 18 months. A handful of the larger suppliers have invested in genuine third-party analytical verification and can produce method-specific lab reports showing non-detects at appropriate reporting limits. But a significant portion — roughly 40 to 50% of what we’ve reviewed — are providing some form of self-declaration without independent analytical data behind it.

The liability that creates for the food manufacturer is real. “Our supplier told us it was PFAS-free” is not a defensible position under FSMA’s preventive controls framework, which places responsibility on the manufacturer to verify that supplier inputs are what they’re claimed to be.

The Analytical Reality: How PFAS Testing in Food and Packaging Actually Works

Testing PFAS is more technically demanding than most food manufacturers expect, and not every lab is set up to do it well in food matrices.

There are over 12,000 identified PFAS compounds. Most routine targeted methods cover between 40 and 70 analytes — the compounds with established toxicological profiles and regulatory relevance, including PFOA, PFOS, fluorotelomer compounds, perfluoroalkyl sulfonates, and the short-chain replacements that proliferated after the long-chain phase-outs. Liquid chromatography coupled with tandem mass spectrometry (LC-MS/MS) is the gold standard, capable of detecting individual compounds at sub-part-per-trillion concentrations in aqueous matrices, and with proper extraction and cleanup, achieving similar sensitivity in solid food.

EPA Methods 533 and 537.1 are the standard analytical approaches for water. Food matrices — with their complex lipid, protein, and carbohydrate backgrounds — require modified extraction procedures and additional cleanup steps to achieve reliable quantitation and avoid matrix suppression. That’s not a trivial difference. A lab running water PFAS methods on food samples without matrix-appropriate validation is likely seeing inaccurate results.

For packaging compliance work specifically, the most meaningful test is a migration study: contact the packaging with a food simulant under conditions that reflect real-world use, then analyze the simulant for PFAS. The FDA recommends food simulants consistent with the framework in European Commission Regulation No. 10/2011, selecting the simulant based on the intended food contact (aqueous for water-based foods, acetic acid solution for acidic foods, ethanol/water or vegetable oil for fatty foods). Contact time and temperature should be calibrated to the worst-case scenario for your product — not ambient conditions if your packaging is used in microwave or hot-fill applications.

There’s also the Total Oxidizable Precursor (TOP) assay, which oxidizes all PFAS precursor compounds to their perfluorocarboxylic acid endpoints, giving a broader estimate of total fluorinated compound burden beyond the targeted analyte list. This is particularly useful when you’re validating a new “PFAS-free” supplier and want comprehensive confirmation rather than just a targeted panel result. The TOP assay doesn’t replace LC-MS/MS targeted analysis, but running both together during initial supplier qualification provides a much more complete picture.

At Qalitex, our PFAS panel for food and packaging matrices uses LC-MS/MS with a 40+ compound target list, and we calibrate migration studies to clients’ specific packaging types and food contact conditions. For manufacturers currently in the middle of a supplier transition, we’ve found that combining targeted LC-MS/MS with a TOP assay gives the most defensible validation dataset.

What Your Testing Program Should Include Before Mid-2026

The compliance timelines under FDA’s revocation mean enforcement attention will increase through 2026. And this is no longer just a federal issue — California’s restrictions on PFAS in food packaging under AB 1200 have been in effect since January 2023, and other states are developing similar legislation. Importers face an additional layer of risk: FDA import alerts have increasingly flagged food contact materials from certain regions where PFAS use in packaging has been less regulated.

Three things every food manufacturer should have documented before mid-2026:

1. Independent analytical verification of high-risk packaging. Not supplier COAs — method-specific LC-MS/MS data from an ISO 17025-accredited laboratory. Your highest-risk packaging is anything with direct contact to fatty or acidic foods, anything used in microwave or heat-in-package applications, and anything with extended contact time (refrigerated or ambient shelf storage).

2. A migration testing protocol. Use food simulants appropriate for your product category, under time and temperature conditions that represent realistic worst-case use. If you’ve switched to a new packaging supplier in the past 12 months, this is non-negotiable. Validate the new material before you’re fully committed to large purchase volumes.

3. Documented supplier qualification criteria. PFAS should be an explicit parameter in your supplier approval process, with defined testing frequency and clear criteria for what constitutes acceptable results. When supplier materials or processes change — and suppliers don’t always volunteer that information proactively — your qualification protocol should trigger re-testing.

A risk-tiered approach makes this manageable. You don’t need to test every SKU at the same frequency. Focus the most rigorous analytical effort on your highest-migration-risk combinations: fatty food + high-surface-contact packaging + elevated temperature. Work down from there.

The manufacturers who will navigate the next 12 months most cleanly are the ones who’ve already done the analytical work to understand what’s actually in their packaging and their food — not the ones waiting for a supplier’s word or an enforcement action to clarify the question for them. If you don’t know where your current packaging stands analytically, that’s the first thing to find out. And the only answer that holds up is the one backed by data.