Is HBA1c Average Glucose Reliable for Diagnosing Diabetes?

Is HBA1c average glucose really a reliable way to diagnose diabetes? Recent studies have shown conflicting results, with some experts arguing that it can be a useful tool while others questioning its accuracy. The debate continues, leaving many wondering about the true effectiveness of HBA1c in identifying individuals with diabetes. Can this commonly used test be trusted, or is there a need for more research to confirm its validity?