05 Dec 2014 --- The Health Canada Microbiological Methods Committee has extended its approval of the DuPont BAX System Real-Time PCR Assay for E. coli O157:H7 in the Compendium of Analytical Methods: Laboratory Procedures for the Microbiological Analysis of Foods. The BAX System assay, published in the Compendium as MFLP-76, is now approved for testing composited samples of ground beef weighing up to 375 g.