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目的探讨不同的空腹血糖值在糖尿病诊断中的价值。方法对３７１８例可疑糖尿病病人进行口服葡萄糖耐量试验，根据２小时血糖值（ＰＧ２ｈ）分为三组。（１）糖尿病组：ＰＧ２ｈ≥１１．１ｍｍｏｌ／Ｌ，；（２）糖耐量减低组：ＰＧ２小时７．８～１１．１ｍｍｏｌ／Ｌ；（３）正常组：ＰＧ２小时＜７．８ｍｍｏｌ／Ｌ。对三组空腹血糖的分布情况进行统计分析。结果ＦＰＧ≥７．０ｍｍｏｌ／Ｌ诊断糖尿病的敏感性较ＦＰＧ≥７．８ｍｍｏｌ／Ｌ有一定提高，特异性降低不明显，但三组间ＦＰＧ重叠现象严重。结论单纯以空腹血糖而不进一步进行ＯＧＴＴ检查作为诊断糖尿病的标准是不可取的。
Objective To explore the value of different fasting blood glucose levels in the diagnosis of diabetes. Methods 3718 cases of suspected diabetic patients oral glucose tolerance test, according to 2 hours of blood glucose (PG2h) is divided into three groups. (1) diabetes group: PG2h≥11.1mmol / L; (2) glucose tolerance group: PG2 hour 7.8 ~ 11.1mmol / L; (3) normal group: PG2 hour <7.8mmol / L. Three groups of fasting blood glucose distribution were statistically analyzed. Results The sensitivity of detecting FPG≥7.0mmol / L was higher than that of FPG≥7.8mmol / L, while the specificity of FPG was not obvious. However, the overlap of FPG in three groups was serious. Conclusion It is not advisable to use fasting plasma glucose alone without further OGTT as a diagnostic criteria for diabetes mellitus.