What does glycosuria indicate?

• A. Glucose in urine
• B. High insulin in blood
• C. Dehydration with low glucose
• D. Bile in urine

Answer: (A)

Glycosuria means glucose in the urine. It occurs when blood glucose is high enough that the kidneys can’t reabsorb all the filtered glucose, so some spills into the urine. In healthy individuals, the kidneys reabsorb nearly all glucose, so urine normally has little or none. When glucose appears in urine, it often points to hyperglycemia and possible diabetes, though it can also occur briefly after a large carbohydrate intake or in pregnancy or certain kidney conditions that affect reabsorption. The other options don’t fit: high insulin in the blood would typically lower blood glucose and isn’t a cause of glucose in urine; dehydration with low glucose wouldn’t produce glucose in urine; bile in urine involves bilirubin, not glucose.