U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
(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.