Glucose in Plasma (24-Hour Urine Collection)

Why This Test Is Done

Your doctor may recommend this test if you have diabetes or are at risk for it. It helps check if your body is properly handling glucose, which can indicate how well your diabetes treatment is working or if there are underlying issues like kidney problems.

What to Expect Before the Test

You’ll need to collect all urine for a full 24-hour period. Typically, you’ll start by emptying your bladder at the beginning of the day and then collect every urine void until the next morning. Store the sample in a refrigerator and bring the entire 24-hour collection to the lab.

What Happens During the Test

No special preparation is needed beyond the urine collection. The lab will analyze the urine sample for glucose content using standard methods, such as enzymatic tests, to determine the total amount excreted over the day.

Possible Results and Interpretation

Results are typically reported as the total amount of glucose excreted in grams or milligrams over 24 hours. Higher than expected amounts may suggest poor glucose control, while normal results indicate effective management of blood sugar.