For a certified laboratory to become approved and to maintain approval for an analyte by a specific method, the

certified laboratory must, at its own expense, meet the proficiency testing requirements of this rule. A certified laboratory must adhere to the requirements found in Volume 1 Module 1 "Proficiency Testing" of the TNI Standard effective January 30, 2019, which are incorporated by reference.

KEY: laboratories

Date of Last Change: November 6, 2023

Notice of Continuation: July 9, 2021

Authorizing, and Implemented or Interpreted Law: 26B-1-202