Measures 1,5 anhydroglucitol, a glucose derived carbohydrate whose urinary excretion varies inversely with mean blood glucose. 1,5 anhydroglucitol appears to integrate variation in mean blood glucose over a period of about two weeks. To view specimen requirements and codes please Select a regional laboratory.
http://www.questdiagnostics.com/testcenter/TestDetail.action?ntc=19599
GlycoMark® reference ranges only apply to individuals without diabetes. Intended Use: The GlycoMark® test may be performed monthly on individuals with moderately controlled diabetes and HbA1c of 6-8% to detect glucose excursions, and to monitor efficacy of therapy changes in diabetic individuals with high HbA1c (>8%).
http://www.clevelandheartlab.com/tests/glycomark/
1 Centrifuge immediately for 10 minutes at 1300 RCF at room temperature.  Pre-squeeze transfer pipet bulb and draw off approximately 2/3 of the upper plasma layer. Note: This ensures that the buffy coat and red cells remain undisturbed.
http://www.clevelandheartlab.com/tests/glycomark/
The GlycoMark® test helps identify patients with more frequent and extreme hyperglycemic excursions over the previous 2 week time period, despite similar HbA1c levels, and indicates the need for more frequent self-blood glucose monitoring or continuous glucose monitoring.
http://www.clevelandheartlab.com/tests/glycomark/
1 Draw and gently invert 8 to 10 times. 2  Centrifuge immediately for 10 minutes at 1300 RCF at room temperature.  Pre-squeeze transfer pipet bulb and draw off approximately 2/3 of the upper plasma layer. Note: This ensures that the buffy coat and red cells remain undisturbed.
http://www.clevelandheartlab.com/tests/glycomark/
GlycoMark® reference ranges apply to persons without diabetes. In people with diabetes, under good to moderate glycemic control (Hemoglobin A1c levels ≤8%), GlycoMark® levels <8 µg/mL suggest significant glycemic variability, most likely due to post meal blood glucose levels increasing above 180 mg/dL.
http://www.questdiagnostics.com/testcenter/TestDetail.action?ntc=19599
The GlycoMark Test. Glycomark / The GlycoMark Test. The GlycoMark test is an FDA-cleared, non-fasting serum or plasma test for monitoring intermediate glucose control in people with diabetes. The GlycoMark test measures the 1,5-anhydroglucitol molecule in the blood. As a specific indicator of recent hypoglycemic excursions, the GlycoMark test provides a clinically proven one- to two-week measure related to the average daily maximum blood glucose.
http://glycomark.com/the-glycomark-test-2/
Decreased serum 1,5-AG produces a lower GlycoMark test result. Because the GlycoMark test is linked to the renal threshold and is affected by periods of hyperglycemia exceeding the renal threshold, it can provide an estimate of the average daily peak glucose level.
http://glycomark.com/the-glycomark-test-2/
The GlycoMark test works by monitoring 1,5-AG. In diabetes, glucose levels can be persistently high, or they can fluctuate over time. These fluctuations can occur over weeks, days, or hours, depending on the level of glycemic control.
http://glycomark.com/the-glycomark-test-2/
However, there are some conditions* that may interfere with the results of the GlycoMark test, which include the following: Kidney Disease – The GlycoMark results are not accurate in advanced kidney disease (Stage 4 or 5; GFR below 30) or dialysis patients.
http://glycomark.com/the-glycomark-test-2/
what is a glycomark test
The GlycoMark test is an FDA-cleared, non-fasting serum or plasma test for monitoring intermediate glucose control in people with diabetes. The GlycoMark test is the Food and Drug Administration-cleared, non-fasting serum or plasma test for monitoring intermediate glucose control in people with diabetes.  