21 CFR § 556.347 - Lasalocid.

---
identifier: "/us/cfr/t21/s556.347"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "21 CFR § 556.347 - Lasalocid."
title_number: 21
title_name: "Food and Drugs"
section_number: "556.347"
section_name: "Lasalocid."
chapter_name: "FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES"
subchapter_number: "E"
subchapter_name: "ANIMAL DRUGS, FEEDS, AND RELATED PRODUCTS"
part_number: "556"
part_name: "TOLERANCES FOR RESIDUES OF NEW ANIMAL DRUGS IN FOOD"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "21 U.S.C. 342, 360b, 371."
regulatory_source: "84 FR 32993, July 11, 2019, unless otherwise noted."
cfr_part: "556"
---


# 556.347 Lasalocid.

(a) *Acceptable daily intake (ADI).* The ADI for total residue of lasalocid is 10 µg/kg of body weight per day.

(b) *Tolerances.* The tolerances for lasalocid (marker residue) are:

(1) *Cattle.* Liver (target tissue): 0.7 ppm.

(2) *Chickens.* (i) Skin with adhering fat (target tissue): 1.2 ppm.

(ii) Liver: 0.4 ppm.

(3) *Rabbits.* Liver (target tissue): 0.7 ppm.

(4) *Sheep.* Liver (target tissue): 1.0 ppm.

(5) *Turkeys.* (i) Liver (target tissue): 0.4 ppm.

(ii) Skin with adhering fat: 0.4 ppm.

(c) *Related conditions of use.* See § 558.311 of this chapter.