Can PFAS hiding in consumer products escape current safety testing?
Some water-resistant, grease-resistant, and stain-resistant products can contain PFAS that targeted tests miss. Choose untreated materials when you can.
Why labels can miss PFAS
PFAS are chemicals used to make some products resist water, grease, or stains. They can show up in treated textiles, waterproofing sprays, and some food-contact materials. Many lab tests only look for a short list of known PFAS. That can miss PFAS precursors, which can later break down into smaller PFAS.
What the research says
A 2026 study in Chemosphere tested impregnation products, textiles, and food-contact materials. Standard targeted testing found individual PFAS levels below 165 ppb, but the TOP assay showed much more oxidizable PFAS precursor material in many samples.
The study found average PFAS increases after the TOP assay of 23,600 times for impregnation products, 1,300 times for textiles, and 420 times for food-contact materials. This means a product can look low in PFAS on one test while still carrying PFAS-related chemicals.
How to lower exposure
Skip stain-resistant, water-resistant, and grease-resistant coatings when you do not need them. Choose untreated wool, cotton, linen, wood, glass, ceramic, or stainless steel when those materials fit the job. For food, avoid grease-proof packaging when a plain plate, bowl, or container works.
The research at a glance
| Study | Journal | Year |
|---|---|---|
| Beyond the watchlist: How the TOP assay exposes untargeted PFASs for current and future regulations in consumer products. | Chemosphere | 2026 |
What to use instead
Browse home items surfaced by our PFAS filter, then check each product page for the exact material and finish.
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