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Diabetes and your blood sugar
Type 2 diabetes often develops gradually and causes no symptoms for a long time. Blood testing can reveal an increased risk or a disturbed blood sugar early, so you can adjust in time.
Glucose and HbA1c: what is the difference?
Glucose measures your blood sugar at the time of the draw; for this you must fast. HbA1c gives your average blood sugar over the past two to three months, independent of what you ate that day. Together they give a more complete picture. Your result is always assessed against the laboratory's reference range.
When is testing useful?
With overweight, little exercise, diabetes in the family or symptoms such as excessive thirst, frequent urination and fatigue, targeted testing can reveal your risk. An abnormal value does not automatically mean diabetes; you discuss the result with a doctor, who advises follow-up testing if needed.
Relevant blood values
Frequently asked questions
What is the difference between glucose and HbA1c?
Glucose measures your current blood sugar (fasting). HbA1c gives an average over two to three months, independent of what you ate that day.
Can I diagnose diabetes myself with a blood test?
Blood testing reveals your blood sugar and risk, but a diagnosis is made by a doctor, often with repeat testing. Always discuss abnormal values with your (GP) doctor.
Do I need to fast?
For the glucose measurement you usually need to fast for 8 hours. HbA1c can be measured regardless of eating. See our guide on fasting.
Sources
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