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§ 493.1236 Standard: Evaluation of proficiency testing performance.
(a) The laboratory must review and evaluate the results obtained on proficiency testing performed as specified in subpart H of this part.
(b) The laboratory must verify the accuracy of the following:
(1) Any analyte or subspecialty without analytes listed in subpart I of this part that is not evaluated or scored by a CMS-approved proficiency testing program.