Final answer:
The Hemoglobin A1c test is the lab test that measures the average blood glucose levels for the past 2-3 months. It provides a long-term measure of blood glucose control by measuring the percentage of hemoglobin bound to glucose.
Step-by-step explanation:
The lab test that measures the average blood glucose levels for the past 2-3 months is the Hemoglobin A1c test. This test is often referred to as the lie detector test by health care workers because it provides a long-term measure of blood glucose control.
The A1C test measures the percentage of hemoglobin that is bound to glucose, giving an indication of average blood glucose levels over a period of time.