Two hours after you eat a meal, your blood sugar levels will be higher, but should not be above 160 mg/dL. If you check your blood sugar before going to bed, the numbers will be slightly higher than in the morning: 100 to 140 mg/dL is the good range.
http://www.ehow.com/about_4798032_good-blood-sugar-levels.html
The amount of glucose (“sugar”, measured in mg/dL) in your blood changes throughout the day and night. Your levels will change depending upon when, what and how much you have eaten, and whether or not you have exercised. A normal fasting (no food for eight hours) blood sugar level is between 70 and 99 mg/dL. A normal blood sugar level two hours after eating is less than 140 mg/dL.
https://www.virginiamason.org/whatarenormalbloodglucoselevels
A normal fasting blood glucose target range for an individual without diabetes is 70-100 mg/dL (3.9-5.6 mmol/L). The American Diabetes Association recommends a fasting plasma glucose level of 70–130 mg/dL (3.9-7.2 mmol/L) and after meals less than 180 mg/dL (10 mmol/L). Individuals with hypoglycemic unawareness (limited or no awareness of low blood glucose symptoms) may require a higher target range.
http://www.mayoclinic.org/diseases-conditions/diabetes/expert-blog/blood-glucose-target-range/BGP-20056575
Blood glucose targets should be in a healthy range to prevent diabetes complications, but also keep you safe from serious low blood glucoses. Remember, blood glucose targets are targets. Diabetes is a balancing acting and blood glucoses will fluctuate; even sharpshooters don't hit the bull's-eye every time.
http://www.mayoclinic.org/diseases-conditions/diabetes/expert-blog/blood-glucose-target-range/BGP-20056575
Two consecutive fasting blood glucose tests that are equal to or greater than 126 mg/dL. Any random blood glucose that is greater than 200 mg/dL. An A1c test that is equal to or greater than 6.5 percent. A1c is an easy blood test that gives a three month average of blood sugars.
https://www.virginiamason.org/whatarenormalbloodglucoselevels
For the majority of healthy individuals, normal blood sugar levels are as follows: 1  Between 4.0 to 6.0 mmol/L (72 to 108 mg/dL) when fasting. 2  Up to 7.8 mmol/L (140 mg/dL) 2 hours after eating.
https://diabetes.co.uk/diabetes_care/blood-sugar-level-ranges.html
This page states 'normal' blood sugar ranges and blood sugar ranges for adults and children with type 1 diabetes, type 2 diabetes and blood sugar ranges to determine people with diabetes. If a person with diabetes has a meter, test strips and is testing, it's important to know what the blood glucose level means.
https://diabetes.co.uk/diabetes_care/blood-sugar-level-ranges.html
Managing your blood glucose (sugar) when you’re ill. When you are sick, your blood glucose (sugar) levels may fluctuate and be unpredictable. During these times, it is a good idea to check your blood glucose (sugar) levels more often than usual (for example, every two to four hours). It is also very important that you continue to take your diabetes medication.
http://www.diabetes.ca/diabetes-and-you/healthy-living-resources/blood-glucose-insulin/managing-your-blood-sugar
Normal and diabetic blood sugar ranges. For the majority of healthy individuals, normal blood sugar levels are as follows: Between 4.0 to 6.0 mmol/L (72 to 108 mg/dL) when fasting. Up to 7.8 mmol/L (140 mg/dL) 2 hours after eating.
https://diabetes.co.uk/diabetes_care/blood-sugar-level-ranges.html
Good Glucose Levels. Of course, if you don't know what good blood sugar levels should be, you'll have a hard time keeping yours under control. As mentioned above, these levels will change throughout the day. For example, when you wake up in the morning or before you eat a meal, your levels should be between 80 to 120 mg/dL.
http://www.ehow.com/about_4798032_good-blood-sugar-levels.html
how is a safe range for blood sugar levels
A safe range for blood sugar levels is 70 to 100 milligrams per deciliter. A safe range for blood sugar is between 70 and 100 mg/dL.