[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: 21CFR862.1025] [Page 177] 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. 862.1025 Adrenocorticotropic hormone (ACTH) test system. (a) Identification. An adrenocorticotropic hormone (ACTH) test system is a device intended to measure adrenocorticotropic hormone in plasma and serum. ACTH measurements are used in the differential diagnosis and treatment of certain disorders of the adrenal glands such as Cushing's syndrome, adrenocortical insufficiency, and the ectopic ACTH syndrome. (b) Classification. Class II.