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目的探讨OGTT和HbA_1c在初诊糖尿病时的准确性和可重复性。方法对门诊和住院患者,进行糖尿病初诊时,在不同时间分别进行OGTT试验和HbA_1c水平测定。结果对96例患者检查结果的分析发现,OGTT对糖尿病诊断的假阳性率为16.67%,阳性率为100%,重复性达81.2%;HbA_1c对糖尿病诊断的阳性率为75.9%,重复性为99.2%。结论糖尿病初诊时,仅按OGTT或者HbA_1c会出现一定的误诊或者漏诊,对初诊糖尿病患者应该进行OGTT和HbA_1c的联合检查。
Objective To investigate the accuracy and repeatability of OGTT and HbA_1c in newly diagnosed diabetic patients. Methods Outpatients and inpatients were examined with OGTT and HbA 1c levels at different times when they were newly diagnosed with diabetes mellitus. Results The analysis of 96 patients showed that the false positive rate of OGTT in diagnosing diabetes was 16.67%, the positive rate was 100% and the repeatability was 81.2%. The positive rate of HbA_1c in diagnosing diabetes was 75.9% and the repeatability was 99.2 %. Conclusion In the first diagnosis of diabetes, only OGTT or HbA_1c may be misdiagnosed or missed, and the combined examination of OGTT and HbA_1c should be conducted in newly diagnosed diabetic patients.