1. The document provides instructions for patients undergoing various blood and urine tests, including fasting glucose, glucose tolerance tests (GTT), and lipid profiles. 2. Patients are instructed to fast overnight for 8-12 hours and avoid foods and drinks like coffee, tea, and alcohol before certain tests. 3. The glucose tolerance test involves fasting, drinking a glucose solution, and having blood drawn at set intervals over 3 hours to test glucose levels.