[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: 21CFR556.240]

[Page 345]
 
                        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.  556.240  Estradiol and related esters.

    No residues of estradiol, resulting from the use of estradiol or any 
of the related esters, are permitted in excess of the following 
increments above the concentrations of estradiol naturally present in 
untreated animals:
    (a) In uncooked edible tissues of heifers, steers, and calves:
    (1) 120 parts per trillion for muscle.
    (2) 480 parts per trillion for fat.
    (3) 360 parts per trillion for kidney.
    (4) 240 parts per trillion for liver.
    (b) In uncooked edible tissues of lambs:
    (1) 120 parts per trillion for muscle.
    (2) 600 parts per trillion for fat, kidney, and liver.

[49 FR 13873, Apr. 9, 1984, as amended at 56 FR 67175, Dec. 30, 1991]