Each laboratory shall enroll in a proficiency testing (PT) program that meets the criteria of 42 CFR 493, Subparts H, I, K and R. The laboratory shall enroll in an approved program or programs for each of the non-waived specialties and subspecialties for which it seeks certification, and shall test the samples in the same manner as patients' specimens.

(Source: Amended at 44 Ill. Reg. 20004, effective December 9, 2020)