Work out estimated glucose variability instantly with clear inputs, formula shown and shareable results.
Expresses glucose standard deviation as a coefficient of variation against the 36% consensus stability target, and converts mean glucose to an estimated HbA1c.
Variability and eA1c
CV (%) = SD / mean x 100; estimated A1c (%) = (mean glucose mg/dL + 46.7) / 28.7 (Nathan ADAG equation)
Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.
The international consensus on continuous glucose monitoring uses a CV of 36% to separate stable from unstable glucose profiles.
No. It is a regression estimate from mean glucose and can differ from a measured HbA1c by several tenths of a percent.