21 CFR §1309.51

1. (a)In any case where the Administrator shall hold a hearing on any registration or application therefore, the procedures for such hearing shall be governed generally by the adjudication procedures set forth in the Administrative Procedure Act (5 U.S.C. 551-559) and specifically by sections 303 and 304 of the Act (21 U.S.C. 823-824), by §§ 1309.52 through 1309.55, and by the procedures for administrative hearings under the Act set forth in §§ 1316.41 through 1316.67 of this chapter.
2. (b)Any hearing under this part shall be independent of, and not in lieu of, criminal prosecutions or other proceedings under the Act or any other law of the United States.