Objectives: Using normal plasmas and criterion plasmas to establish a kind of accurate and feasible method that could measure international normalized ratio (INR) of prothrombin time (PT).
目的：利用正常血浆和定标血浆，建立一种准确可靠、易于实验室开展的凝血酶原时间国际标准化比值检测方法。
The PT, PTR and INR of 60 patients treated with oral anticoagulants and 40 patients with liver disorders were determined with the two kinds of thromboplastin reagents.
用进口试剂和自制品测定60例口服华法令抗凝治疗病人和40例肝病患者的PT，求得ptr和INR并进行比较。
IN the patients after oral anticoagulant therapy INR can reflect the result of PT more exactly.
患者口服抗凝治疗后仅INR能较准确地反映PT的结果。
Therefore, to the reliability and comparability of the test, we believe that our domestic prothrombin reagents should be marked with accurate ISI value and INR should be used as PT report form.
为使PT结果具备可比性和可信性，我国的凝血活酶试剂应有准确ISI值标定。并推行以INR作为PT测定报告形式。
Methods: The PT and INR were measured by dry reagent and liquid reagent in same Automated Blood Coagulation Analyzer in patients and healthy people, Analyze results with statistical methods.
方法：用干粉试剂和液体试剂在同一台全自动血凝仪测定病人标本与健康人标本凝血酶原时间与INR的结果，应用统计学方法对测定结果进行分析。
Methods: The PT and INR were measured by dry reagent and liquid reagent in same Automated Blood Coagulation Analyzer in patients and healthy people, Analyze results with statistical methods.
方法：用干粉试剂和液体试剂在同一台全自动血凝仪测定病人标本与健康人标本凝血酶原时间与INR的结果，应用统计学方法对测定结果进行分析。
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