Diagnosing type 1 diabetes
Your doctor can test for diabetes one of four ways and they may do a repeat test to confirm the result. In Canada the amount of sugar in your blood is measured in mmol/L.
Fasting blood glucose test
For this test, you can't eat or drink anything except water for at least eight hours beforehand. A test result of 7.0 mmol/L or greater in your blood indicates diabetes.
Random blood glucose test
This test may be done at any time, regardless of when you last ate. A test result of 11.1 mmol/L or greater, plus symptoms of diabetes, indicates diabetes.
A1C test
This test may be done at any time, regardless of when you last ate. A test result of 6.5 % or greater (in adults) and in the absence of factors that affect the accuracy of the A1C indicates diabetes.
Oral glucose tolerance test
You'll be given a special sweetened drink prior to this blood test. A test result of 11.1 mmol/L or greater taken two hours after having the sweet drink indicates diabetes.
A second test must be done in all cases (except if you have acute signs and symptoms). Once diabetes has been diagnosed, ask your doctor to refer you for diabetes education. Diabetes Canada also has many resources to help you understand diabetes better and live a long and healthy life.