---
kind: "section"
citation: "21 C.F.R. § 556.300"
title: "21"
number: "556.300"
heading: "Gentamicin."
url: "https://uscodex.org/cfr/21/556.300"
---

# §556.300. Gentamicin.

- (a) **Acceptable daily intake (ADI).** The ADI for total residue of gentamicin is 60 µg/kg of body weight per day.
- (b) **Tolerances.** The tolerances for gentamicin are:
  - (1) **Chickens and turkeys.** Edible tissues (excluding eggs): 0.1 ppm.
  - (2) **Swine.**
    - (i) **Liver—** 0.3 ppm.
    - (ii) **Kidney (target tissue)—** 0.4 ppm gentamicin (marker residue).
    - (iii) **Fat—** 0.4 ppm.
    - (iv) **Muscle—** 0.1 ppm.
- (c) **Related conditions of use.** See §§ [520.1044a](/cfr/21/520.1044a.md), [520.1044b](/cfr/21/520.1044b.md), [520.1044c](/cfr/21/520.1044c.md), [522.1044](/cfr/21/522.1044.md), [524.1044e](/cfr/21/524.1044e.md), and [529.1044b](/cfr/21/529.1044b.md) of this chapter.

## Notes

### Amendments

[84 FR 32993, July 11, 2019, as amended at 86 FR 13188, Mar. 8, 2021]

### Authority

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

### Source

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

### Amendments

[84 FR 32993, July 11, 2019, as amended at 86 FR 13188, Mar. 8, 2021]