Published 2026-04-15 Last review 2026-05-20 Next review 2026-11-20
Jurisdictions
Global
Why screen
Type 2 diabetes can develop silently for years. Early detection allows lifestyle changes and treatment that reduce complications affecting the heart, kidneys, eyes and nerves.
Common tests
Screening typically uses fasting plasma glucose, HbA1c (a 2–3 month glucose average) or an oral glucose tolerance test. Each has different preparation requirements and thresholds defined in clinical guidelines.
Interpretation boundaries
A single abnormal result does not diagnose diabetes; guidelines generally require confirmation. Thresholds and screening ages vary by jurisdiction — a clinician interprets results in your context.
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Guidance can vary by country — check the jurisdictions above.
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