Serum or Plasma Glucose (Mass Concentration) – 24-Hour Profile

Why This Test Is Done

Your doctor may order this test if you have diabetes, prediabetes, or symptoms like frequent urination, excessive thirst, or unexplained weight changes. It’s also used to check how well medications or lifestyle changes are controlling your blood sugar.

How the Test Works

During this test, blood is drawn at specific times (often before meals and after meals) over 24 hours. The samples are analyzed to measure glucose concentration in your serum or plasma using a specialized method, likely immunoassay or enzymatic techniques.

What to Expect Before the Test

You’ll need to follow a strict diet and activity schedule before the test. Typically, you’ll eat and drink normally but avoid sugary foods or drinks for a few hours before each blood draw. Your doctor or lab staff will guide you on the exact timing and preparation.

What to Expect During the Test

Blood samples will be taken at scheduled intervals, often in a clinic or at home with a healthcare provider’s supervision. You may feel slight discomfort from the needle, but it usually goes away quickly.