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Fructosamine (mmol/L) = (HbA1c – 1.61) x 58.82. What is fructosamine? Fructosamine is the product of the nonenzymatic glycation of protein (glucose bound to protein). It should be seen as an umbrella term for circulating proteins that have undergone glycation.
Using a fructosamine to A1C calculator makes managing diabetes easier. It quickly converts fructosamine levels to an estimated A1C percentage. This helps you understand your blood sugar better and manage your diabetes well.
eAG/A1C Conversion Calculator. ADA is recommending the use of a new term in diabetes management, estimated average glucose, or eAG. Health care providers can now report A1C results to patients using the same units (mg/dL or mmol/L) that patients see routinely in blood glucose measurements.
This conversion helps you gauge how your recent glucose control aligns with your longer-term A1c goal. Suppose your fructosamine level is 250 µmol/L. Using the conversion calculator, you might find this roughly equivalent to an A1c of 5,86%.
The calculator can be used to determine the A1C level from the average blood sugar in mg/dL or the other way around. To estimate the A1C level the following steps take place: Step 1: Calculate A = Average Blood Sugar + 46.7
HbA1c = 0.017 X fructosamine level (µmol/L) + 1.61 (HbA1c is in DCCT% terms) Reference: Guillausseau P-J, Charles M-A, Godard V, Timsit J, Chanson P, Paolaggi F et al. Comparison of fructosamine with glycated hemoglobin as an index of glycemic control in diabetic patients.
The fructosamine and A1C tests for diabetes both measure blood sugar. But there are differences, with the fructosamine test measuring average blood glucose levels across two or three weeks prior to the test date and the hemoglobin A1C test (HbA1c) measuring across two to four months.
Fructosamine, which is a measure of non-enzymatic glycation of circulating proteins including albumin, globulins, and lipoproteins, has evolved to be a reasonable alternative to HbA1c measurement in situations where HbA1c is not reliable.
Other blood tests (eg, fructosamine, glycated albumin) that reflect average glucose levels over the preceding two to three weeks are sometimes used when A1C is inaccurate. CGM systems are increasingly used as a complement to A1C, particularly in persons with type 1 diabetes.
To use the fructosamine to A1c conversion chart, follow these steps: Obtain your fructosamine level from a blood test. Locate the corresponding fructosamine level on the chart. Find the estimated A1c value associated with that fructosamine level. For example, if your fructosamine level is 250 µmol/L, the estimated A1c value would be 5.5%.