Biological Variation Values This table provides desirable analytical quality specifications for imprecision, bias and total error based upon biological variation.
CLIA Proficiency Limits This table provides CLIA's criteria for acceptable proficiency performance per 42 CFR Ch. IV (10-1-03 Edition).
Congress passed the Clinical Laboratory Improvement Amendments (CLIA) in 1988 establishing quality standards for all laboratory testing to ensure the accuracy, reliability and timeliness of patient test results regardless of where the test was performed. The final CLIA regulations were published on February 28, 1992 and are based on the complexity of the test method; thus, the more complicated the test, the more stringent the requirements. CLIA specifies quality standards for proficiency testing (PT), patient test management, quality control, personnel qualifications and quality assurance, as applicable.
Public Health Practice Program Office (PHPPO) Homepage:
NEW FINAL CLIA RULE! Medicare, Medicaid, and CLIA Programs; Laboratory Requirements Relating to Quality Systems and Certain Personnel Qualifications; Final Rule January 24, 2003
PARTIAL SUMMARY FINAL RULE This summary is for informational purposes only, is not comprehensive, focuses primarily on general and special chemistry, hematology and virology requirements and not intended to be used as a guide for achieving compliance.
The German Medical Association Directive on Quality Assurance of Quantitative Laboratory Tests for Medical Purposes as published in Deutsches Ärzteblatt, Vol. 98, No. 42, 19 October 2001, pp. A 2747 to A2759.
The European Committee for Standardization Homepage: CEN documents and updates; European conferences, Annual Report and more.
The International Organization for Standardization (ISO) is a worldwide federation of national standards bodies from some 130 countries, one from each country. The homepage contains information about standards, News, FAQs, contacts and more.
AACB Australasian Association of Clinical Biochemists,Inc.
AIMS Australian Institute of Medical Scientists
RCPA The Royal College of Pathologists Australasian
RCPAQAP The Royal College of Pathologists Australasian - Quality Assurance Program
NATA National Association of Testing Authorities, Australia
NZIMLS New Zealand Institute of Medical Laboratory Science,Inc.
IANZ International Accreditation New Zealand
The American Association for Clinical Chemistry Homepage.
The College of American Pathologists Homepage: Information about CAP Laboratory Improvement Programs, Reference and Standard Materials, News and more.
The Joint Commission on Accreditation of Healthcare Organizations Homepage. The mission of the Joint Commission on Accreditation of Healthcare Organizations is to improve the quality of care provided to the public through the provision of health care accreditation and related services that support performance improvement in health care organizations. The Joint Commission evaluates and accredits more than 19,500 health care organizations in the United States, including hospitals, health care networks, managed care organizations, and health care organizations that provide home care, long term care, behavioral health care, laboratory, and ambulatory care services.
Laboratory Practice and Quality
Dr. James Westgard Homepage: Tools, technology and training for quality management in healthcare laboratories. Articles on QC and lab quality, continuing education, online course: "QC Planning for Healthcare Laboratories", offered by the American Association for Clinical Chemistry (AACC), a cource about figuring out what amount of QC is necessary to assure the desired quality will be achieved for the methods in your laboratory. This course is intended for clinical laboratory scientists who have an interest in or responsibility for technical quality management of laboratory testing processes.
The Division of Laboratory Systems Public Health Practice Program Office