An HbA1c of 13% requires
prompt medical assessment today or within 24 hours, especially if this is a new diagnosis or treatment is not currently being taken. Current ADA guidance notes that insulin is commonly considered when
A1c is over 10% or glucose is around or above
300 mg/dL, particularly with thirst, frequent urination, weight loss, or ketosis. See the
ADA 2026 treatment guidance.
At the visit, the clinician will usually check current blood glucose, urine/blood ketones if indicated, kidney function and electrolytes, blood pressure, urine albumin, lipids, and decide whether immediate insulin or other treatment is needed. Do not self-start or change diabetes medicines without a clinician’s plan.