What is glucose

What is the normal range of random blood sugar test levels :
1. 2 hours after eating : less than 140 
2. on fasting ( more than 4-5 hours ) : less than 100
3. any time : less than 200 
How to make sure you didnt get DM ?
1. take blood suger tests multiable times through 2-3 days 
2. provide your blood suger reading to your doctor
3. do blood and blood suger test and HBA1C to make sure of your blood suger level 
General advices to avoid diabeties :
1. consult an internal medicine doctor to do the needed medical examiantions and determine the treatment ( if needed )
2. pay attention to your diet and avoid sugar 
3. exercising regularly such as 3-4 times a week
4. drinking plenty of water 
5. loss weight
6. avoid smoking and alcohol
7. make a good knowledge about food calories and healthier food 
8. if there is any other chronic disease such as high blood pressure , control it