Glucose in Serum (24-Hour Urine Collection)

Why This Test Is Done

Your doctor may order this test if you have symptoms of diabetes, such as frequent urination, excessive thirst, or unexplained weight changes. It may also be used to check how well your kidneys are filtering glucose from your blood, especially in people with diabetes or other kidney-related conditions.

How the Test Works

You’ll collect all urine produced in a 24-hour period in a special container. The urine is then sent to the lab for analysis to determine the total glucose content.

Sample Collection Process

To prepare, empty your bladder completely at the start of the collection period (typically midnight to midnight). Use a clean container, and discard the first urine sample. Collect all urine for the next 24 hours, including any overnight samples. Store the urine in a cool place until you return it to your healthcare provider.

What to Expect Before the Test

No special preparation is usually needed, but you may be asked to avoid certain medications or foods that could affect glucose levels. Follow any specific instructions your doctor provides to ensure accurate results.