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Letter to the editor

The Quick and Owren prothrombin time methods for oral anticoagulant therapy do not agree well using the International Normalized Ratio (INR) units

Pages 455-456 | Published online: 08 Jul 2009

REFERENCES

  • Odén A, Fahlén M. Oral anticoagulation and risk of death: a medical record linkage study. Br Med J 2002; 325: 1073–5.
  • Horsti J. Agreement of Owren and Quick prothrombin times: effects of citrate and calcium concentrations and International Sensitivity Index correction. Clin Chem 2001; 47: 940–4.
  • Horsti J. Comparison of Quick and Owren prothrombin time with regard to the harmonisation of the International Normalised Ratio (INR) System. Clin Chem Lab Med 2002; 40: 399–403.
  • Horsti J. Has the Quick or Owren prothrombin time method the advantage in harmonisation for the International Normalized Ratio system? Blood Coag Fibrinol 2002; 13: 641–6.

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