---
kind: "section"
citation: "21 C.F.R. § 556.290"
title: "21"
number: "556.290"
heading: "Fluralaner."
url: "https://uscodex.org/cfr/21/556.290"
---

# §556.290. Fluralaner.

- (a) **Acceptable daily intake (ADI).** The ADI for total residue of fluralaner is 10 µg/kg of body weight per day.
- (b) **Tolerances.** The tolerances for parent fluralaner (marker residue) are:
  - (1) **Chickens.**
    - (i) **Liver (target tissue)—** 320 ppb.
    - (ii) **Muscle—** 110 ppb.
    - (iii) **Eggs—** 2500 ppb.
  - (2) **Cattle.**
    - (i) **Liver (target tissue)—** 500 ppb.
    - (ii) **Muscle—** 350 ppb.
- (c) **Related conditions of use.** See §§ [516.900](/cfr/21/516.900.md) and [520.999](/cfr/21/520.999.md) of this chapter.

## Notes

### Amendments

[91 FR 5301, Feb. 6, 2026, as amended at 91 FR 41561, July 7, 2026]

### Authority

Authority: 21 U.S.C. 342, 360b, 371.

### Source

Source: 84 FR 32993, July 11, 2019, unless otherwise noted.

### Amendments

[91 FR 5301, Feb. 6, 2026, as amended at 91 FR 41561, July 7, 2026]