---
kind: "section"
citation: "9 C.F.R. § 439.51"
title: "9"
number: "439.51"
heading: "Probation of accreditation."
url: "https://uscodex.org/cfr/9/439.51"
---

# §439.51. Probation of accreditation.


Upon a determination by the Administrator, a laboratory will be placed on probation for the following reasons:

- (a) If the laboratory fails to complete more than one inter-laboratory accreditation maintenance proficiency testing sample analysis within 12 consecutive months, unless written permission is granted by the Administrator.
- (b) If the laboratory does not respond to ALP inquiries related to its participation in the program or fails to meet any of the requirements or criteria set in this part.
- (c) If the laboratory does not successfully demonstrate the maintenance of quality assurance capabilities including its results from inter-laboratory accreditation maintenance proficiency testing samples. ALP evaluation criteria are based on the ISO 13528 standard, to include performance evaluation by z score statistics.

## Notes

### Authority

AUTHORITY: 7 U.S.C. 138f, 450, 1901-1906, 1622(o); 21 U.S.C. 451-470, 601-695; 7 CFR 2.18, 2.53.

### Source

Source: 87 FR 51864, Aug. 24, 2022, unless otherwise noted.