Blood sugar 17.8.

If the blood sugar reaches 17.8mmol/L, it belongs to the high side. If there is no further examination and diagnosis of diabetes, it needs to be confirmed by glucose tolerance test. After diagnosis, it should be regulated by insulin or hypoglycemic drugs in time. If the hypoglycemic effect of oral hypoglycemic drugs alone is not good, insulin treatment should be combined, especially for type 2 diabetes. After the blood sugar gradually drops, it should be changed to oral hypoglycemic drugs. Sustained high blood sugar, especially more than 20mmol/L, is easy to induce serious metabolic disorders, and it is necessary to reduce blood sugar in time and monitor the decline of blood sugar.