24-Hour Urine Glucose Measurement (Substance Concentration)

Why This Test Is Done

Your healthcare provider may order this test if you have symptoms of diabetes, such as frequent urination, excessive thirst, or unexplained weight loss. It may also be used to monitor long-term glucose control in people with diabetes or to check for conditions like kidney issues that can affect urine sugar levels.

How the Test Works

You’ll collect all your urine over a full 24-hour period, typically starting after you wake up and ending just before you wake up the next morning. The urine is then tested for glucose concentration. This method provides a broader picture of your glucose metabolism compared to a single blood or urine sample.

Sample Collection and Preparation

To prepare, empty your bladder before starting the collection. Use a clean container (like a pitcher) to collect all urine for the entire day. Keep the sample refrigerated if not tested immediately. Label the container with your name, date, and time the collection began.

What to Expect During the Test

There’s no special preparation needed beyond collecting urine over 24 hours. You’ll likely be instructed to drink enough fluids to maintain normal urine output but avoid sugary drinks or medications that could affect results. Your healthcare provider will review the results with you.