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Printed on 4/19/2026
For informational purposes only. This is not medical advice.
The TyG index is a simple surrogate marker of insulin resistance derived from fasting triglycerides and fasting plasma glucose. It correlates with clamp-derived insulin resistance and is commonly used in cardiometabolic research and risk stratification.
Formula: TyG = ln((Triglycerides [mg/dL] × Fasting Glucose [mg/dL]) / 2)
The TyG index provides a practical insulin resistance signal based on routine fasting labs. Lower values tend to align with lower metabolic risk, while higher values are associated with insulin resistance, metabolic syndrome, and elevated cardiovascular risk in many cohorts.
Use this calculator when fasting triglyceride and fasting glucose values are available and you want a quick, low-cost proxy for insulin resistance in outpatient screening, preventive cardiology, or metabolic follow-up.
TyG thresholds are not universally standardized and vary across ethnicity, age, and study design. The index should not be used as a stand-alone diagnostic test for diabetes or metabolic syndrome.
For related assessments, see HOMA-IR, Cholesterol Ratio and ASCVD Risk Calculator.
Disclaimer: This tool is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider with questions about your health.
Estimate insulin resistance using fasting glucose and fasting insulin with the HOMA-IR equation.
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