A meta-analysis of 12 studies found that A1C level performs differently when used as a diagnostic measurement for diabetes or prediabetes among populations of African descent in the US, including Afro-Caribbean people, African Americans, and Africans who live in the US. Published in the journal Preventing Chronic Disease, the findings suggest that a 2-hour oral glucose tolerance test, and even the combination of A1C and fasting plasma glucose, are better options for diagnosing diabetes or prediabetes among people of African descent, says lead researcher Margrethe Horlyck-Romanovsky.
A1C not enough to diagnose diabetes in those of African descent
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