21 CFR 556.240 - Estradiol and related esters.

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§ 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) [Reserved]

[49 FR 13873, Apr. 9, 1984, as amended at 56 FR 67175, Dec. 30, 1991; 76 FR 16291, Mar. 23, 2011]

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United States Code

Title 21 published on 2015-04-01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 21 CFR Part 556 after this date.

  • 2015-10-13; vol. 80 # 197 - Tuesday, October 13, 2015
    1. 80 FR 61293 - New Animal Drugs; Approval of New Animal Drug Applications; Withdrawal of Approval of a New Animal Drug Application; Change of Sponsor; Change of Sponsor's Address
      GPO FDSys XML | Text
      DEPARTMENT OF HEALTH AND HUMAN SERVICES, Food and Drug Administration
      Final rule; technical amendment.
      This rule is effective October 13, 2015, except for the amendment to 21 CFR 558.460, which is effective October 23, 2015.
      21 CFR Parts 510, 520, 522, 524, 556, and 558