What is a common symptom that may suggest poorly controlled diabetes in a patient?

A high Hemoglobin A1C level is indeed a common indicator of poorly controlled diabetes. This measurement reflects the average blood glucose levels over the past two to three months. In patients with diabetes, an elevated A1C indicates chronic hyperglycemia, which means their blood sugar levels have consistently been higher than the target range. This aligns with the complications associated with diabetes, such as neuropathy, retinopathy, and cardiovascular issues, highlighting the importance of effective glucose regulation in managing the disease.

While low energy levels and frequent urination can also suggest uncontrolled diabetes, they are more subjective and can result from various other conditions. A normal weight does not typically suggest poorly controlled diabetes, as many with poorly controlled diabetes may be overweight or experience significant weight fluctuations. The A1C level provides a more definitive and objective measure of long-term glucose control.