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e-CFR data is current as of February 24, 2021

Title 21Chapter ISubchapter EPart 556Subpart B → §556.428


Title 21: Food and Drugs
PART 556—TOLERANCES FOR RESIDUES OF NEW ANIMAL DRUGS IN FOOD
Subpart B—Specific Tolerances for Residues of Approved and Conditionally Approved New Animal Drugs


§556.428   Narasin.

(a) Acceptable daily intake (ADI). The ADI for total residue of narasin is 5 µg/kg of body weight per day.

(b) Tolerances. The tolerance for narasin (marker residue) is:

(1) Chickens. Abdominal fat (target tissue): 480 ppb.

(2) [Reserved]

(c) Related conditions of use. See §§558.363 and 558.364 of this chapter.

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