得重查一次。诊断糖尿病的几种方法见内：

诊断糖尿病的几种方法： 1.fasting plasma glucose (FPG) test(空腹血糖检查)---简便但有时不准确，需重测一次或做OGTT。见Table 1. 2.oral glucose tolerance test (OGTT)(口服葡萄糖耐量试验)---空腹至少八小时，喝75克的葡萄糖水，两小时后测血糖。见Table 2. 3.random plasma glucose test(also called a casual plasma glucose test)(随机血糖检查)：≥ 200 mg/dL，加上“多尿、多饮(渴)、不明体重下降、疲劳、视力模糊、饥饿、伤口不易愈合等症状”，医生会通知再测FPG/OGTT以确诊。 4.A1C test(also called glycated hemoglobin, glycosylated hemoglobin, hemoglobin A1C and HbA1c test) ---is a common blood test used to diagnose prediabetes,type 1 and type 2 diabetes and to later gauge how well you're managing your diabetes.不需空腹，检测前可吃可喝。检测过去2-3个月内血糖的平均水平，用于诊断，也是血糖控制好坏的评定指标。见Table 3. Table 1. FPG test

Plasma Glucose Result (mg/dL)	Diagnosis
99 or below	Normal
100 to 125	Pre-diabetes (impaired fasting glucose)
126 or above	Diabetes*

^*Confirmed by repeating the test on a different day.

People with a fasting glucose level of 100 to 125 milligrams per deciliter (mg/dL) have a form of pre-diabetes called impaired fasting glucose (IFG). Having IFG means a person has an increased risk of developing type 2 diabetes but does not have it yet. A level of 126 mg/dL or above, confirmed by repeating the test on another day, means a person has diabetes.

Table 2. OGTT

2-Hour Plasma Glucose Result (mg/dL)	Diagnosis
139 and below	Normal
140 to 199	Pre-diabetes (impaired glucose tolerance)
200 and above	Diabetes*

^*Confirmed by repeating the test on a different day.


Table 3. A1C test

A1C level	Diagnosis
4.5 % to 6 %	Normal
6% and 6.5 %	Pre-diabetes (impaired glucose tolerance)
higher than 7 %	Diabetes*

If your A1C level is higher than 7 percent, your doctor may recommend a change in your diabetes treatment plan.





Good luck!