Steady-state relationship between average glucose, HbA1c and RBC lifespan
- PMID: 29559230
- DOI: 10.1016/j.jtbi.2018.03.023
Steady-state relationship between average glucose, HbA1c and RBC lifespan
Abstract
HbA1c is used to estimate average glucose. Previous studies showed linear relationship between average glucose and HbA1c. We made a new theoretical relationship using recently proposed Γ-like function model of erythrocyte lifespan. We showed the relationship between average glucose and HbA1c; we approximated it into a simple hyperbolic function: HbA1c=MRBCkgAG/(1+(2/3)MRBCkgAG), whose inverse function is easily obtained. Apparent linear relationship is an approximation of the curved relationship. Hyperbolic function would provide a more accurate approximation than a linear equation. Physicians should keep in mind the curved relationship and be aware that extremely high HbA1c indicates acceleratingly high glucose level.
Keywords: Average glucose; Diabetes mellitus; HbA1c; Mathematics; Non-linear relationship.
Copyright © 2018 Elsevier Ltd. All rights reserved.
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