In the absence of hypoglycemia, fasting blood glucose should be less than 7.0 nm; When tolerated, fasting blood glucose should be less than 6.1 mmol; But the elderly should relax the limit to less than 8.0 nm.
2. Postprandial blood sugar
The main reason to measure blood sugar after a meal is to know whether the food you eat affects blood sugar. In particular, two hours after a meal can provide important value.