U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
The specialty of chemistry includes for the purposes of proficiency testing the subspecialties of routine chemistry, endocrinology, and toxicology.
Regulations most recently checked for updates: Aug 27, 2025
The specialty of chemistry includes for the purposes of proficiency testing the subspecialties of routine chemistry, endocrinology, and toxicology.