Certified Diabetes Educator Practice Exam 2025 - Free Practice Questions and Study Resource.

The 1,5-Anhydroglucitol (1,5-AG) blood test, known as GlycoMark, primarily assesses short-term glycemic control and glucose excursions. This test measures the level of 1,5-AG in the blood, which provides insight into recent fluctuations in blood glucose levels, particularly in the previous 1 to 2 weeks. When blood glucose levels are consistently elevated, particularly postprandially (after meals), it results in lower levels of 1,5-AG since it is eliminated from the blood when glucose levels are high.

Therefore, this test is particularly useful for monitoring short-term glucose control and can indicate the extent of glycemic excursions that may occur throughout the day. It is an important tool for evaluating how well an individual's blood sugar levels are maintained within a target range, especially after meals. It complements other tests, like HbA1c, which reflects long-term control, by providing a snapshot of more immediate fluctuations in blood glucose levels.

While other factors such as insulin resistance and overall diabetes management may be influenced by blood glucose control, they are not the primary focus of what the 1,5-AG test evaluates.