Questions Concerning the New Recommended Mean Normal Prothrombin Time (MNPT) to Calculate the International Normalized Ratio (INR)

• References

• 1 WHO Expert Committee on Biological Standardization, 33. Report: Technical Report Series 1983; 687: 81-105
• 2 ICSH/ICTH, Recommendation for Reporting Prothrombin Time in oral Anticoagulant Control. Thromb Haemost 1985; 53: 155-156
• 3 Kirkwood TBL. Calibration of Reference Thromboplastins and Standardisation of the Prothrombin Time Ratio. Thromb Haemost 1983; 49: 238-244
• 4 Normenausschuß Medizin im DIN Deutsches Institut fur Normung e. V. Referenzplasma DIN 58939 RP. Berlin: Beuth-Verlag 1987 last version
• 5 Lang H, Spaethe R, Beeser H, Becker U, Kolde HJ, Spanuth E, Witt P, Zaugg H. Calibration of a Lyophilized Pooled Plasma as Candidate Reference Plasma for Standardization of the Prothrombin Time Ratio. Hamostaseologie 1993; 13: 96-105