eCFR Reference Browser

---

title: "21 CFR §556.500"

source: "https://www.ecfr.gov/current/title-21/section-556.500"

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: "556.500"

section_subject: "Oxytetracycline."

cfr_reference: "21 CFR 556.500"

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"

---

(a)Acceptable daily intake (ADI). The ADI for total tetracycline residues (chlortetracycline, oxytetracycline, and tetracycline) is 25 micrograms per kilogram of body weight per day.

(b)Beef cattle, dairy cattle, calves, swine, sheep, chickens, turkeys, finfish, and lobster. Tolerances are established for the sum of residues of the tetracyclines including chlortetracycline, oxytetracycline, and tetracycline, in tissues and milk as follows:

(1)2 parts per million (ppm) in muscle.

(2)6 ppm in liver.

(3)12 ppm in fat and kidney.

(4)

0.3 ppm in milk.

§556.500 - Oxytetracycline.