Glucose in Serum (24-hour Profile)

Why This Test Is Done

Your healthcare provider may order this test if you have diabetes, prediabetes, or symptoms like frequent urination, extreme thirst, or unexplained weight changes. It may also be used to assess how well your current treatment plan is working or to diagnose conditions like hypoglycemia (low blood sugar).

What to Expect Before the Test

No special preparation is needed for this test. You may have blood drawn from a vein in your arm at different times over 24 hours, often at home or in a clinic. Your provider will guide you on when to collect samples, usually including morning and evening times. If you’re on insulin or other diabetes medications, discuss timing with your healthcare team to ensure accurate results.

What the Test Measures

This test measures the concentration of glucose (sugar) in your blood serum at multiple points over a day. The samples are collected at intervals to reflect how your blood sugar fluctuates naturally, influenced by meals, physical activity, and other factors.

How the Results Are Used

The results help your healthcare provider assess your blood sugar control, identify patterns (like spikes or drops), and adjust treatments if needed. For example, they may look for consistency, peaks after meals, or low points before meals to tailor your diabetes management plan.