The difference in the tests is that the Fructosamine measures the average over a period of 2-3 weeks, while the HbA1C measures the average over a period of 2-3 months. The HbA1C test reveals more long-term glucose control, while the fructosamine test reveals short-term.
Fructosamine testing may be used to help people with diabetes monitor and control their blood glucose levels in cases where the A1c test cannot be used and/or a shorter-term monitoring window is desired.
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