References for:
Prothrombin Time Testing Practices in the Pacific Northwest
  1. Committee on Quality of Health Care in America, Institute of Medicine. To Err is Human: Building a Safer Health System. Washington, DC: National Academy Press, 2000.
  2. Shahangian S, Stankovic AK, Lubin IM, et al. Results of a survey of hospital coagulation laboratories in the United States, 2001. Arch Pathol Lab Med. 2005;129:47-60.
  3. Fairweather RB, Ansell J, van der Besselaar AM, et al. College of American Pathologists Conference XXXI on Laboratory Monitoring of Oral Anticoagulation therapy: laboratory monitoring of oral anticoagulation therapy. Arch Pathol Lab Med. 1998;122:768-781.
  4. NCCLS. One-Stage Prothrombin Time (PT) Test and Activated Partial Thromboplastin Time (APTT) Test; Approved Guideline. NCCLS document H47-A; 1996.
  5. American Society of Health System Pharmacists. ASHP therapeutic position statement on the use of the international normalized ratio system to monitor oral anticoagulant therapy. Am J Health Syst Pharm. 1995;52:529-531.
  6. Hirsh J, Dalen JE, Deykin D, et al. Oral anticoagulants: mechanism of action, clinical effectiveness, and optimal therapeutic range. Chest. 1995;108(Supplement):231S-246S.
  7. Ansell J, Hirsh J, Wenger NK. Management of Oral Anticoagulant Therapy: Principles and Practice. American Heart Association, Postgraduate Education Committee, Council on Clinical Cardiology; 1999.
  8. NCCLS. Collection, Transport, and Processing of Blood Specimens for Coagulation Testing and General Performance of Coagulation Assays; Approved Guideline-Third Edition. NCCLS document H21-A3; 1998.
  9. Hassett AC. Optimizing the INR to improve anticoagulant monitoring: Transfusion Medicine Update. The Institute for Transfusion Medicine; 1998.
  10. Loeliger EA. International Committee for Standardization in Haematology/International Committee for Thrombosis and Haemostasis recommendations for reporting prothrombin time in oral anticoagulation control. Thromb Haemost. 1985;54:155-156.
  11. The Ontario Association of Medical Laboratories, Quality Assurance and Clinical Laboratory Practice Committee. CLP 014 Guidelines for the Laboratory Monitoring of Oral Anticoagulants; 1997.
  12. NCCLS. How to Define and Determine Reference Intervals in the Clinical Laboratory; Approved Guideline-Second Edition. NCCLS document C28-A2; 2000.
  13. World Health Organization Expert Committee on Biological Standardization. 28th Report: WHO Technical Report Series 610, Geneva, Switzerland: WHO; 1977.