Glucose in urine (quantitative)

Why Is This Test Done?

Your healthcare provider may order this test to monitor blood sugar levels indirectly, especially if you have diabetes or symptoms like frequent urination, excessive thirst, or unexplained weight changes. It can also help diagnose conditions affecting how your body processes sugar or filters waste from your blood.

What to Expect Before the Test

No special preparation is needed for this test. You’ll likely provide a urine sample in a clean container, often collected at home or during a routine office visit. If your provider asks for a 24-hour urine sample, follow their instructions carefully to collect all urine over that period.

What Happens During the Test?

A small sample of your urine is collected and sent to a lab. The lab uses a chemical method (likely turbidimetry or another colorimetric technique) to detect glucose. Results are reported as either positive (glucose present) or negative (glucose absent).

What Do the Results Mean?

Positive results indicate glucose in your urine, which may suggest your kidneys are not reabsorbing sugar properly or that your body is producing more sugar than usual. Negative results mean no detectable glucose in the urine sample. Always discuss results with your provider, as they’ll consider your overall health and symptoms.