The urine sugar test measures glucose levels in urine and can help detect conditions like diabetes. It involves collecting a urine sample and using Benedict's solution to test for the presence of glucose. A color change in the solution indicates different glucose levels, with blue meaning no sugar and shades of orange or red signifying higher levels. While easy to perform, the urine test has limitations and is best used alongside blood glucose monitoring to properly diagnose and manage diabetes or other causes of excess glucose in the urine.