[Code of Federal Regulations] [Title 21, Volume 8] [Revised as of April 1, 2001] From the U.S. Government Printing Office via GPO Access [CITE: 21CFR862.1145] [Page 180] TITLE 21--FOOD AND DRUGS CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES--(Continued) PART 862--CLINICAL CHEMISTRY AND CLINICAL TOXICOLOGY DEVICES--Table of Contents Subpart B--Clinical Chemistry Test Systems Sec. 862.1145 Calcium test system. (a) Identification. A calcium test system is a device intended to measure the total calcium level in serum. Calcium measurements are used in the diagnosis and treatment of parathyroid disease, a variety of bone diseases, chronic renal disease and tetany (intermittent muscular contractions or spasms). (b) Classification. Class II. [[Page 181]]