[Code of Federal Regulations] [Title 21, Volume 8] [Revised as of April 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 21CFR864.5400] [Page 228] TITLE 21--FOOD AND DRUGS CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) PART 864--HEMATOLOGY AND PATHOLOGY DEVICES--Table of Contents Subpart F--Automated and Semi-Automated Hematology Devices Sec. 864.5400 Coagulation instrument. (a) Identification. A coagulation instrument is an automated or semiautomated device used to determine the onset of clot formation for in vitro coagulation studies. (b) Classification. Class II (performance standards). [45 FR 60598, Sept. 12, 1980]