Is a glycated hemoglobin level of 7.5% severe?
HbA1c (glycated hemoglobin) at 7.5% exceeds the normal range, which is not particularly severe but still requires attention. Detailed analysis is as follows:
Glycated hemoglobin is formed by a non-enzymatic reaction between hemoglobin in red blood cells and glucose in serum. It is typically measured using affinity chromatography or high-performance liquid chromatography (HPLC), with a normal reference range of 4%–6%. An HbA1c level of 7.5% exceeds this normal range, although it is not considered extremely serious. Although glycated hemoglobin is currently not included in the diagnostic criteria for diabetes, an HbA1c level above 6.5% suggests persistent hyperglycemia. Without timely intervention, this may lead to diabetes or other health complications.
When such results occur, it is recommended to visit a hospital for further evaluation, including tests such as fasting plasma glucose and the 75g oral glucose tolerance test (2-hour plasma glucose) to confirm diagnosis. If no obvious symptoms are present, specific medical treatment may not be necessary. Instead, improvement can be achieved by strictly controlling intake of high-sugar foods and increasing physical activity. When needed, medications such as metformin hydrochloride tablets or gliclazide modified-release tablets may be used under medical supervision.