Relationship Between Red Cell Distribution Width (RDW) and HbA1C in Patients With Type 2 Diabetes Mellitus After Glycemic Control

This observational study examines the relationship between a routine blood marker called RDW (red cell distribution width — a measure of how uniform red blood cells are in size) and HbA1c (a measure of long-term blood sugar control) in patients with poorly controlled type 2 diabetes. The goal is to understand whether RDW can serve as a useful indicator of diabetes management. **You may be eligible if...** - You have been diagnosed with type 2 diabetes - Your HbA1c is above 7% (meaning your diabetes is not well controlled) **You may NOT be eligible if...** - You have type 1 diabetes or secondary diabetes (caused by another condition) - You have anemia or low hemoglobin - You have recently had a blood transfusion - You are pregnant or have certain blood disorders like TTP or inflammatory bowel disease Talk to your doctor to see if this trial is right for you.