HOMA-β Calculator for Prediabetes
Representative values for someone with impaired fasting glucose in the prediabetes range.
Calculate pancreatic beta-cell function using the HOMA-β (Homeostatic Model Assessment of Beta Cell Function) formula. Enter your Fasting Insulin, Fasting Glucose to get an instant homa-β. Formula: (20 * fasting_insulin) / (fasting_glucose - 3.5).
HOMA-β
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How It Works
How It Works
The HOMA-β calculator estimates how well your pancreatic beta cells are functioning. Beta cells are responsible for producing insulin, the hormone that helps control blood sugar levels.
The calculator uses your fasting insulin and fasting glucose levels in a specific formula: (20 × fasting insulin) ÷ (fasting glucose − 3.5). This calculation produces a percentage that reflects your estimated beta-cell activity.
- Uses fasting insulin (µU/mL)
- Uses fasting glucose (mmol/L)
- Multiplies insulin by 20
- Divides by (glucose − 3.5)
- Returns a percentage value
Understanding the Results
The result is shown as a percentage (%), representing your estimated beta-cell function. Higher percentages generally suggest greater insulin-producing activity, while lower values may indicate reduced beta-cell performance.
This value is an estimate and should be interpreted alongside other clinical information. It is most useful when reviewed by a healthcare professional.
- Output is shown as HOMA-β (%)
- Higher values suggest stronger insulin production
- Lower values may indicate reduced beta-cell function
- Best interpreted with other lab results
- Not a standalone diagnostic test
Frequently Asked Questions
What is the HOMA-β calculator used for?
The HOMA-β calculator estimates pancreatic beta-cell function based on fasting insulin and fasting glucose levels. It helps assess how well the pancreas is producing insulin. This measurement is often used in research and clinical settings to evaluate insulin secretion in individuals with or at risk for diabetes.
When should I use the HOMA-β calculator?
You should use the HOMA-β calculator when you have fasting insulin (µU/mL) and fasting glucose (mmol/L) lab results. It is most appropriate after an overnight fast of at least 8 hours. This ensures the values reflect baseline metabolic function rather than recent food intake.
What do the HOMA-β results mean?
The result is expressed as a percentage representing estimated beta-cell function. Higher percentages generally indicate greater insulin secretion capacity, while lower values may suggest impaired beta-cell function. Interpretation should always be done in consultation with a healthcare professional.
Why must fasting glucose be above 3.5 mmol/L?
The formula subtracts 3.5 from the fasting glucose value, so glucose must be greater than 3.5 mmol/L to produce a valid result. Values at or below 3.5 would make the denominator zero or negative, leading to an invalid or misleading calculation. Always ensure accurate lab measurements before calculating.
Can HOMA-β diagnose diabetes?
No, HOMA-β alone cannot diagnose diabetes. It is a supportive assessment tool that estimates beta-cell function but does not replace standard diagnostic criteria like fasting glucose, HbA1c, or oral glucose tolerance tests. A healthcare provider should interpret the result within the full clinical context.
How is HOMA-β different from HOMA-IR?
HOMA-β estimates pancreatic beta-cell function, while HOMA-IR assesses insulin resistance. Both use fasting insulin and glucose values but apply different formulas. Together, they provide complementary information about insulin production and insulin sensitivity.
Disclaimer
This health calculator is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Disclaimer.