Work out insulin sensitivity factor instantly with clear inputs, formula shown and shareable results.
Applies the 1800, 1500 or 2000 rule to a total daily insulin dose to estimate how far one unit of insulin lowers blood glucose.
Sensitivity rules
ISF (mg/dL per unit) = constant / total daily dose, with constant 1800 for rapid analogues and 1500 for regular insulin
Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.
1800 is usual for rapid-acting analogues and 1500 for regular human insulin; the choice belongs with the prescribing team.
No. Sensitivity commonly varies between morning, afternoon and overnight periods.