The U.S. Food and Drug Administration (FDA) has requested comments on the utility and burdens of preparing a petition seeking an exemption from 100-percent identity testing of dietary ingredients under its current good manufacturing practice requirements for dietary supplements. According to the agency, manufacturers may be able to demonstrate, "through various methods and processes in use over time for its particular operation, that a system of less than 100 percent identity testing would result in no material diminution of assurance of the identity of the dietary ingredient as compared to the assurance provided by 100 percent identity testing." While the agency has not received any new petitions during the last three years, it estimates that one or fewer will be submitted annually with some eight hours required to "prepare the factual and legal information necessary to support a petition for exemption." See Federal Register, November 14, 2013.