The Glucose Post Prandial Urine test is a non-invasive screening test to see how your body manages sugar after a meal. The sample is collected 1-2 hours after eating. Normally, your kidneys reabsorb all glucose. If glucose is found in your urine after a meal, it's a strong sign that your blood sugar levels spiked high enough to overwhelm your kidneys. This simple urine test is an effective initial screen that provides a clear "yes/no" signal, prompting a more definitive blood test.