"Cattle eligible for Angus influence beef programs based on genotype must have positive identification (ear tags, tattoos, brands, etc.) and be traceable back to provable (e.g.; registration papers) Angus parentage. Qualifying cattle must be traceable to one registered parent or two registered grandparents. Programs which claim a specified percentage of Angus heritage must use this method."
But, the Certified Angus Beef designation is not one of the programs covered under the USDA’s "Angus influence beef programs." The CAB is nothing more than a commercial label.