Researchers at Oregon State University recently published a study highlighting concerns that use of certain mass-labeled standards in analysis of volatile PFAS, particularly fluorotelomer alcohols, as well as N-methyl perfluorooctane sulfonamide (MeFOSA), and N-methyl perfluorooctane sulfonamidoethanol (MeFOSE) may result in false positives, running the risk of inaccurately identifying more products as “PFAS containing.” As these PFAS have been identified in a variety of consumer products, such as clothing and food-contact materials, special attention to these analytical concerns will be critical to proper analyses.