eCFR Reference Browser

---

title: "21 CFR §556.240"

source: "https://www.ecfr.gov/current/title-21/section-556.240"

title_number: "21"

volume_number: "6"

chapter_number: "Unknown"

subchapter_code: "E"

subchapter_subject: "ANIMAL DRUGS, FEEDS, AND RELATED PRODUCTS"

part_code: "556"

part_subject: "TOLERANCES FOR RESIDUES OF NEW ANIMAL DRUGS IN FOOD"

subpart_code: "B"

subpart_subject: "Specific Tolerances for Residues of New Animal Drugs"

section_number: "556.240"

section_subject: "Estradiol and related esters."

cfr_reference: "21 CFR 556.240"

title_name: "Title 21"

title_subject: "Food and Drugs"

parts_covered: "Parts 500 to 599"

revised_date: "Revised as of April 1, 2019"

publication_date: "As of April 1, 2019"

contains_description: "Containing a codification of documents of general applicability and future effect"

publication_info: "Published by the Office of the Federal Register National Archives and Records Administration as a Special Edition of the Federal Register"

---

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]

§556.240 - Estradiol and related esters.