Diabetic Blood Sugar Levels

The level of glucose in your blood changes regularly. This depends on whether and what you have eaten and also on whether you have exercised or not. If your sugar levels are higher than normal, this is a clear indication of the presence of diabetes or pre diabetes.


When fasting, normal blood sugar level should be less than 100 mg/dL, and less than 140 mg/dL two hours after eating.

*Note that fasting here means that you stay without eating for a period of eight hours. Blood sugar is even lower in most healthy people. During the day and before meals, the level of blood glucose tends to be at the lowest level. For people without diabetes, this will be at around 70 to 80 mg/dL. Blood glucose level of less than 100 mg/dL during fasting is normal. Even with a prolonged fasting, blood glucose does not fall below 60 mg/dL.



Diabetic Blood Sugar Levels

A person whose blood glucose is higher than 126mg/dL after not eating for eight hours is said to have diabetes. This is called fasting plasma glucose test.

A person whose blood glucose level rises to over 200 mg/dL two hours after taking a sugary drink is also said to have diabetes. This test is called oral glucose tolerance test and the patient is normally restricted from eating eight hours before the test is carried out.

If you randomly check your blood glucose level and then you find that it is more than 200 mg/dL, this a very clear indication that you have diabetes. This can also be accompanied by other signs such as thirst, weight loss and increased urination. If you find this, consider seeing your doctor to prevent the effects of diabetes from progressing and also to avoid developing other diabetes complications.

Checking urine for glucose is not much recommended because it is not very accurate. This should only be used when it is impossible to test the blood.

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