Controlling a variety of feeder cattle characteristics, and market and sale conditions, we estimate that certified vaccinations claims along with at least 30 days weaning claims bring in a premium of $6.13/cwt, which is nearly two times of that for similar uncertified claims, compared to no vaccinations and weaning claims at all in Iowa feeder cattle auctions. This indicates that the third-party certification is supported in the market as a tool to signal quality in terms of vaccinations and weaning claims towards preconditioning.