CAP - College of American Pathologists
WHO - World Health Organization
IFCC - Internacional Federation of Clinical Chemestry and Laboratory Medicine
ASCP - American Society of Clinical Pathology
AACC - American Association for Clinical Chemestry
RCPA - Royal College of Pathologists of Australasia
UKNEQAS - United Kingdom National External Quality Assessment Service

   USCAP - United States and Canadian Academy of Pathology (all the educational materials are free for personal use)