📋 Reference sheet · Diabetes, lipids and hormones

HbA1c: diagnosis, targets, and is this type 1?

HbA1c for diagnosis and for target, and the clues that this is type 1 rather than type 2.

One page, every threshold with its number and unit. Written and reviewed by practising UK GPs. Last reviewed 29 Jul 2026.

This sheet puts the whole decision on one page: the thresholds that change what you do, each with its number and unit, and the sources each one was checked against.

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Inside the full sheet 🔒 Thresholds, numbers and units 🔒 Sources checked against the guideline

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Related Ocean Article: Type 2 Diabetes & Insulin therapy (T2DM) · also GLP-1 Mimetics and Tirzepatide, Type 1 Diabetes & Insulin therapy (T1DM), Prediabetes. Part of the GP reference sheets, result interpretation one page per test or finding.