American Association for Clinical Chemistry
http://www.aacc.org
American Society for Clinical Laboratory Science
http://www.ascls.org
American Society for Clinical Laboratory Science Continuing Education
http://www.ascls.org/education/
American Society of Hematology
http://www.hematology.org
Clot Ed
http://www.clot-ed.com
College of American Pathologists
http://www.cap.org
Clinical and Laboratory Standards Institute
http://www.clsi.org
International Society of Hematology
http://www.ishworld.org
International Society of Thrombosis & Hemostasis
http://www.isth.org
National Hemophilia Foundation
http://www.hemophilia.org
World Federation of Hemophilia
http://www.wfh.org