According to the June 28, 2024 USDA Constituent Update, FSIS evaluated commercially available pathogen screening technologies and will adopt a new rapid screening test for adulterant Shiga toxin-producing E. coli (STEC). Specifically, FSIS will use the bioMérieux GENE-UP^® Pathogenic E. coli (PEC) platform to screen enriched samples received on or after September 16, 2024, for adulterant STEC. This screening method adds efficiency by employing a novel molecular diagnostic target to rapidly identify samples containing STEC. FSIS expects that adoption of this new screening method will reduce the number of potential–and presumptive–positive STEC results that do not confirm positive with our current method. FSIS expects that industry will see reduced product holding times while waiting for laboratory results.