QUICKI insulin sensitivity calculator
Calculate the Quantitative Insulin Sensitivity Check Index from paired fasting measurements.
Formula & units
QUICKI = 1 ÷ [log₁₀(insulin in µIU/mL) + log₁₀(glucose in mg/dL)]
The calculator converts glucose and insulin to the units required by the equation before applying base-10 logarithms.
Worked example
Glucose 90 mg/dL and insulin 10 µIU/mL give QUICKI 0.3385.
What the result can tell you
Higher QUICKI generally corresponds to greater insulin sensitivity. A value is not a diagnosis, and research thresholds depend on the population and assay.
Read the interpretation guide →
Sources for this method
Questions about QUICKI
Which logarithm does QUICKI use?
QUICKI uses base-10 logarithms of insulin in µIU/mL and glucose in mg/dL. Entering glucose in mmol/L directly into the formula gives a different result.
Source: Katz et al. · QUICKI, 2000 (opens in a new tab) · Related calculator → · Link to answer
Is a higher QUICKI value better?
Higher QUICKI generally indicates greater insulin sensitivity. It is a research surrogate; clinical interpretation depends on the context and population.
Source: Katz et al. · QUICKI, 2000 (opens in a new tab) · Related calculator → · Link to answer
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