Insulin with 24-Hour Average Glucose Profile (Serum/Plasma)

Why This Test Is Done

Your healthcare provider may order this test if you have diabetes, prediabetes, or if you’re experiencing symptoms like frequent urination, extreme thirst, or unexplained weight changes. It can also help evaluate how well your current diabetes treatment is working or if you’re at risk for complications like hypoglycemia or hyperglycemia.

What to Expect Before the Test

No special preparation is typically needed, but you may be asked to fast for a short period before your blood is drawn. If you’re taking certain medications, let your provider know. Your blood sample will be taken from a vein in your arm.

What the Test Results Mean

Insulin levels alone don’t give a full picture of glucose control. This test combines insulin data with your average blood glucose over 24 hours to provide a clearer picture of how your body’s hormones and glucose levels interact daily. Results may be used to adjust treatment plans, such as insulin dosages or lifestyle changes.

How the Test Works

Blood is drawn to measure insulin concentration in your serum or plasma. Simultaneously, glucose levels are tracked over 24 hours using continuous glucose monitoring or periodic blood tests, and averaged to create a profile. This helps identify patterns in glucose fluctuations that may not be obvious from single measurements.