不一定喔。A1C正常也有可能是糖尿病的。

https://diabetesjournals.org/care/article/34/Supplement_2/S184/28282/The-Pros-and-Cons-of-Diagnosing-Diabetes-With-A1C

https://www.niddk.nih.gov/health-information/diagnostic-tests/a1c-test#different

不知道這兩個信息源是否權威