American College of Physicians (ACP) guidelines redefined diabetes, stating that an HbA1c level up to 8.4% and an after-meal blood sugar up to 250 mg/dL are normal and no longer considered diabetic.

Original review summary

The review says the 2018 ACP guidance concerned treatment targets for people already diagnosed with Type 2 diabetes, not diagnostic criteria: it recommended an HbA1c target of 7% to 8%. It says diabetes diagnostic standards were unchanged, with an HbA1c of 6.5% or higher indicating diabetes and a two-hour post-meal reading of 200 mg/dL or higher also indicating diabetes.[S1]