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QUICKI (Quantitative Insulin Sensitivity Check Index) is a research and clinical formula estimating insulin sensitivity from a single fasting blood draw: QUICKI = 1 / (log10(fasting insulin) + log10(fasting glucose)). This calculator is for general reference and educational purposes only — it is not a medical diagnosis. Consult a doctor for actual insulin sensitivity assessment.
How it works
Enter fasting glucose (mg/dL) and fasting insulin (uU/mL). The tool computes the base-10 logarithm of each, sums them, and takes the reciprocal.
- Enter fasting glucose (mg/dL).
- Enter fasting insulin (µU/mL).
- Click Calculate to see your results.
Examples
Fasting glucose 90 mg/dL, fasting insulin 5 uU/mL
QUICKI = 1 / (log10(5) + log10(90)) = 1 / (0.699 + 1.954) = 0.377.
Who should use it
- Research and clinical estimation of insulin sensitivity from routine labs.
- Comparing insulin sensitivity trends over time alongside a doctor.
Industry applications
- Endocrinology and metabolic research
- Primary care metabolic screening
Advantages
- Requires only a single fasting blood draw.
- Published research suggests a strong correlation with clamp-based insulin sensitivity measures.
Limitations
- Less precise than the hyperinsulinemic-euglycemic clamp, the research gold standard.
- Reference ranges vary by lab, assay, and population.
Common mistakes to avoid
- Using a non-fasting glucose or insulin value, which invalidates the QUICKI estimate.
- Confusing QUICKI's direction with HOMA-IR's — higher QUICKI means more sensitive, higher HOMA-IR means more resistant.
Best practices
- Only use fasting (typically 8-12 hour fast) glucose and insulin values for this calculation.
Tips
- Track QUICKI trends over time using consistent fasting conditions and the same lab where possible.