Diagnosis

Laboratory examination：fasting blood sugar（FBS）（no food over 8 hours）＞126 mg/dl，random blood sugar（RBS）＞200 mg/dl.

Necessary examinations：

（1）Physical exam：（blood pressure，eyes，peripheral pulses，neuro status，the food skin.）.(https://www.daowen.com)

（2）all newly diagnosed cases：Uric convention/Creatinine examinations，routine examination and electrocardiogram（ECG）.

（3）annual eye and renal function examination.