How many sites will the establishment sample on a carcass, and when?

• A. 3 sites (brisket, neck, and rump), at least 4 hours after the carcass enters the cooler
• B. 3 sites (brisket, flank, and rump), at least 12 hours after the carcass enters the cooler
• C. As many sites and at whatever location the establishment deems fit
• D. 2 sites (flank and rump) at the final rail before the product enters the cooler but after the zero-tolerance check

Answer: (B)

Carcass sampling in beef establishments is standardized to provide a representative check for contamination after processing and chilling. The best approach is to collect samples from three predetermined sites—brisket, flank, and rump—and to do so after the carcass has been in the cooler for at least 12 hours. Sampling three sites across different regions gives better coverage of where contamination can occur on the carcass, improving the chance of detecting issues. Waiting at least 12 hours after entering the cooler allows surface conditions to stabilize and aligns with the typical post-chill testing window, reducing variability due to moisture or heat on the surface. The other options use incorrect site locations, too few sites, or sampling at an inappropriate time/place, which would undermine the ability to consistently monitor for contamination.