Ten type 1 diabetic patients recorded their daily home blood glucose values, pre- and post-prandially, for 12 weeks. Blood was collected weekly for HbA(1c) and total haemoglobin measurement. A rolling 28-day mean of all blood glucose values and a glycation index (the ratio of the HbA(1c) to the rolling mean blood glucose) were calculated. In the pooled patients' data, there was a large scatter of results about the HbA(1c) versus mean blood glucose regression line. There was less variation in the results of individual patients. The glycation indices showed marked inter-individual variation, and in 60% of patients there was an inverse relationship between glycation index and mean blood glucose, suggesting a non-linear relationship between mean blood glucose and HbA(1c). Patients should be monitored on the basis of their own previous results, and in some patients blood HbA(1c) may be a less sensitive index of mean blood glucose concentration at higher glucose levels.
CITATION STYLE
Hudson, P. R., Child, D. F., Jones, H., & Williams, C. P. (1999). Differences in rates of glycation (glycation index) may significantly affect individual HbA(1c) results in type 1 diabetes. Annals of Clinical Biochemistry, 36(4), 451–459. https://doi.org/10.1177/000456329903600408
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