Final answer:
If a patient's fasting sugar is abnormally high during a glucose tolerance test (GTT), it is important to notify the physician or nurse before proceeding. Abnormally high fasting sugar levels may indicate the presence of diabetes mellitus.
Step-by-step explanation:
If a patient's fasting sugar is abnormally high during a glucose tolerance test (GTT), it is important to notify the physician or nurse before proceeding. Abnormally high fasting sugar levels may indicate the presence of diabetes mellitus. In a GTT, glucose levels are measured before and after consuming a high-carbohydrate drink to evaluate the body's ability to process glucose. If the fasting sugar is too high, it can potentially impact the accuracy of the test results and require further investigation.