[Code of Federal Regulations] [Title 21, Volume 6] [Revised as of April 1, 2007] From the U.S. Government Printing Office via GPO Access [CITE: 21CFR556.36] [Page 348] TITLE 21--FOOD AND DRUGS CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) PART 556_TOLERANCES FOR RESIDUES OF NEW ANIMAL DRUGS IN FOOD--Table of Subpart B_Specific Tolerances for Residues of New Animal Drugs Sec. 556.36 Altrenogest. (a) Acceptable Daily Intake (ADI). The ADI for total residues of altrenogest is 0.04 micrograms per kilogram of body weight per day. (b) Tolerances--(1) Swine--(i) Liver (the target tissue). The tolerance for altrenogest (the marker residue) is 4 parts per billion (ppb). (ii) Muscle. The tolerance for altrenogest (the marker residue) is 1 ppb. (2) [Reserved] [68 FR 62007, Oct. 31, 2003]