[Code of Federal Regulations]
[Title 21, Volume 6]
[Revised as of January 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 21CFR556.277]

[Page 346]
 
                        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 Contents
 
     Subpart B--Specific Tolerances for Residues of New Animal Drugs
 
Sec.  556.277  Fenprostalene.

    A tolerance for marker residue of fenprostalene in cattle is not 
needed. The safe concentrations for the total residues of fenprostalene 
in the uncooked edible tissues of cattle are 10 parts per billion in 
muscle, 20 parts per billion in liver, 30 parts per billion in kidney, 
40 parts per billion in fat, and 100 parts per billion in the injection 
site. As used in this section ``tolerance'' refers to a concentration of 
a marker residue in the target tissue selected to monitor for total 
residues of the drug in the target animal, and ``safe concentrations'' 
refer to the concentrations of total residues considered safe in edible 
tissues.

[49 FR 26716, June 29, 1984]