The presence of urine glucose 3+ in the routine urine test suggests the presence of glucose in the urine, which may be a decrease in the renal glucose threshold, and may also be considered a disease such as diabetes, which requires further testing.
In diabetic patients with high blood glucose, excess glucose beyond the reabsorption capacity of the kidneys is excreted in the urine, and a positive urine glucose level can occur. Other diseases such as hyperthyroidism, hyperadrenocorticism, inflammation of the pancreas, and insulinoma can also appear positive for urine sugar. Kidney diseases such as chronic nephritis and nephrotic syndrome can also cause positive urine sugar changes. A urine test for glucose 3+ is not always the result of disease and can also be positive for urine sugar if one engages in too strenuous exercise or consumes large amounts of sugar.
To test for urine glucose 3+, a comprehensive analysis and judgment should be made in the context of the patient’s medical history, age, and symptoms, and the diagnosis should be determined based on the results of fasting glucose and two-hour postprandial glucose tests, thyroid function, pancreatic CT, and kidney function.