Which laboratory result in a client with type 1 diabetes mellitus is most critical to report to the primary health care provider?

In a client with type 1 diabetes mellitus, a serum creatinine level of 2.0 mg/dL is most critical to report. An elevated serum creatinine level indicates impaired renal function, which can be particularly concerning for individuals with diabetes. Diabetes is a leading cause of chronic kidney disease (CKD), and monitoring kidney function is essential for preventing further complications.

In this context, a serum creatinine level of 2.0 mg/dL suggests that the kidneys are not filtering waste effectively, which may require immediate medical assessment and intervention. Early recognition and management of renal impairment can prevent progression to end-stage renal disease and the need for dialysis.

Other laboratory results, while potentially important, do not indicate immediate or critical concern in the same way. A fasting blood glucose level of 99 mg/dL is within the normal range for someone without diabetes, and serum potassium at 3.9 mEq/L is considered normal, indicating that there is no immediate risk of dyskalemia. Likewise, a serum sodium level of 140 mEq/L is also within the normal range and would not require urgent reporting.

Thus, the elevation in serum creatinine is a clear indicator of potential kidney dysfunction that warrants prompt attention from the healthcare provider