Tests Directory · 20 October 2026
HbA1c measures your average sugar over the last 3 months, so it needs no fasting and is not affected by yesterday’s meal.
Under 5.7% is normal, 5.7–6.4% is prediabetes and 6.5% or more points to diabetes. Prediabetes can often be reversed with healthy food and activity.
People with diabetes test every 3 months; the target is often under 7% as advised by the doctor.
Severe anaemia and some haemoglobin disorders can affect the result, so doctors read it with the CBC.