你指的专科医生是他广告上说自己是endocrinologist？如果他是正牌的endo，他没有

他没有检查过你母亲的HbA1c level　(简称A1C test)?

The following are the results when the HbA1c is being used to diagnose diabetes:

• Normal: Less than 5.7%
• Pre-diabetes: 5.7% to 6.4%
• Diabetes: 6.5% or higher

If you have diabetes, you and your doctor or nurse will discuss the correct range for you. For many people the goal is to keep your level at or below 6.5 - 7%.

Note: Normal value ranges may vary slightly among different laboratories. Talk to your doctor about the meaning of your specific test results. The examples above show the common measurements for results for these tests. Some laboratories use different measurements or may test different specimens.

http://www.nlm.nih.gov/medlineplus/ency/article/003640.htm