Insulin Sensitivity

What This Calculator Measures

Presents insulin resistance as its reciprocal so that higher values indicate better insulin sensitivity, providing an intuitive complement to HOMA-IR.

How to Use

1. Enter the patient's HOMA-IR value.
2. Review the insulin sensitivity score.
3. Higher values (toward 1.0) reflect better sensitivity.

Interpretation Guide

A score > 0.4 indicates good insulin sensitivity; a score between 0.2 and 0.4 suggests reduced sensitivity; and a score of 0.2 or less indicates significant insulin resistance.

Clinical Significance

Expressing insulin resistance as sensitivity (1/HOMA-IR) makes results more intuitive for patients and clinicians tracking improvement, since values rise as metabolic health improves.

When to Use

• Quick clinic or bedside estimate of insulin sensitivity
• Presenting HOMA-IR results in a more intuitive direction
• Monitoring response to lifestyle interventions

When Not to Use

• In type 1 diabetes
• In patients on exogenous insulin
• As a dynamic measure of the insulin response to meals
• As a standalone diagnostic test

Limitations

• Is derived entirely from HOMA-IR and inherits its fasting and assay limitations.
• Captures a single fasting measurement, not the dynamic response to meals.
• Not validated in type 1 diabetes.
• Insulin assay variability affects the result.

Worked Example

A 48-year-old woman has a HOMA-IR of 4.0.

Insulin sensitivity = 1 / 4.0 = 0.25, in the reduced range (0.2–0.4), consistent with meaningful insulin resistance.

Evidence

Source

Endocrinology / Diabetes

Reference

Wallace TM, Levy JC, Matthews DR. Use and abuse of HOMA modeling. Diabetes Care. 2004;27(6):1487-1495.

Reviewed By

MedCalcHub Clinical Team

Version

1.0

Updated

2026-08

1. Wallace TM, Levy JC, Matthews DR. Diabetes Care. 2004;27(6):1487-1495.

References

1. Wallace TM, Levy JC, Matthews DR. Use and abuse of HOMA modeling. Diabetes Care. 2004;27(6):1487-1495. (Review Article)

Frequently Asked Questions