Final answer:
Hemoglobin A1c testing is often used to measure the amount of glucose that attaches to hemoglobin as a way to monitor the long-term control of diabetes mellitus.
Step-by-step explanation:
The type of glucose testing that is often used to measure the amount of glucose that attaches to hemoglobin is called Hemoglobin A1c testing. Hemoglobin A1c, also known as glycosylated or glucosylated hemoglobin, is a fraction of hemoglobin to which glucose is bound. This type of testing is used to monitor the long-term control of diabetes mellitus.