CFR > Title 42 - Public Health > CHAPTER IV—CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES > SUBCHAPTER G—STANDARDS AND CERTIFICATION (parts 482 to 498) > PART 493—LABORATORY REQUIREMENTS > SUBPART H—Participation in Proficiency Testing for Laboratories Performing Nonwaived Testing (§493.801 to §493.865) > 493.839—Condition: Chemistry.

493.839—Condition: Chemistry.

The specialty of chemistry includes for the purposes of proficiency testing the subspecialties of routine chemistry, endocrinology, and toxicology.