[Code of Federal Regulations] [Title 42, Volume 3] [Revised as of October 1, 2004] From the U.S. Government Printing Office via GPO Access [CITE: 42CFR493.821] [Page 1003] TITLE 42--PUBLIC HEALTH CHAPTER IV--CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) PART 493_LABORATORY REQUIREMENTS--Table of Contents Subpart H_Participation in Proficiency Testing for Laboratories Performing Nonwaived Testing Sec. 493.821 Condition: Microbiology. The specialty of microbiology includes, for purposes of proficiency testing, the subspecialties of bacteriology, mycobacteriology, mycology, parasitology and virology.