References
- Kirkwood T. Calibration of reference thromboplastins and standardisation of the prothrombin time ratio. Thromb Haemost. 1983;50:238–244.
- Baglin TP, Keeling DM, Watson HG, et al. Guidelines on oral anticoagulation (warfarin): third edition-2005 update. Br J Haematol. 2006;132:277–285.
- Barcellona D, Mastino D, Marongiu F. Portable coagulometer for vitamin K-antagonist monitoring: the patients’ point of view. PPA. 2018;12:1521–1526.
- Barcellona D, Fenu L, Marongiu F. Point-of-care testing INR: an overview. Clin Chem Lab Med. 2017;55:800–805.
- Johnson SA, Vazquez SR, Fleming R, et al. Correction factor to improve agreement between point-of-care and laboratory international normalized ratio values. Am J Health Syst Pharm. 2017;74:e24–e31.
- Biedermann JS, Leebeek FWG, Buhre PN, et al. Agreement between Coaguchek XS and STA-R Evolution (Hepato Quick) INR results depends on the level of INR. Thromb Res. 2015;136:652–657.
- Baker WS, Albright KJ, Berman M, et al. POCT PT INR – is it adequate for patient care? A comparison of the Roche Coaguchek XS vs. Stago Star vs. Siemens BCS in patients routinely seen in an anticoagulation clinic. Clin Chim Acta. 2017;472:139–145.
- Tripodi A, Breukink-Engbers WGM, van den Besselaar AMHP. Oral anticoagulant monitoring by laboratory or near-patient testing: what a clinician should be aware of. Semin Vasc Med. 2003;3:243–254.
- Sølvik UØ, Petersen PH, Monsen G, et al. Discrepancies in international normalized ratio results between instruments: a model to split the variation into subcomponents. Clin Chem. 2010;56:1618–1626.
- Quick AJ. The prothrombin in hemophilia and in obstructive jaundice. J Biol Chem. 1935;109:73–74.
- Owren PA. Thrombotest. A new method for controlling anticoagulant therapy. Lancet. 1959;2:754–758.
- ISO17593. Clinical laboratory testing and in vitro medical devices – requirements for in vitro monitoring systems for self-testing of oral anticoagulant therapy. 1st ed. Geneva (Switzerland): International Organization for Standardization; 2007. p. 24–32.
- Isert M, Miesbach W, Schüttfort G, et al. Monitoring anticoagulant therapy with vitamin K antagonists in patients with antiphospholipid syndrome. Ann Hematol. 2015;94:1291–1299.
- Sølvik UØ, Røraas TH, Petersen PH, et al. Effect of coagulation factors on discrepancies in international normalized ratio results between instruments. Clin Chem Lab Med. 2012;50:1611–1620.