The Medical Laboratories of King Abdulaziz National Guard Medical City in Riyadh has recorded a new global achievement after being selected as one of the best medical laboratories in the world through the assessment of the American College of Pathology, which oversees the medical laboratory evaluation throughout the world. The Head of the Department of Pathology and Laboratory Medicine at King Abdulaziz National Guard Medical City Dr. Abdulaziz Al-Ajlan pointed out that since the Medical Laboratories in the Health Affairs at King Abdulaziz National Guard Medical City has gotten the accreditation of American College (CAP) in 1986 until now , as well as obtaining a certificate of accreditation of the United International Committee for the accreditation of health organizations (JCI) for four consecutive sessions, in addition to the laboratory accreditation from the American Association of Blood Banks, these laboratories are evaluated in the presence of international experts from accredited Agencies periodically.