🩸 Triglyceride-Glucose (TyG) Index
Estimate insulin resistance with the triglyceride-glucose (TyG) index.
Clinical takeaway
Derived from a standard lipid/glucose panel.
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When to use
Surrogate marker of insulin resistance from routine labs.
How it works
TyG = ln(fasting TG × fasting glucose / 2), mg/dL. Higher values = more insulin resistance.
Key points
- Derived from a standard lipid/glucose panel.
- Correlates with cardiometabolic risk.
- Thresholds are population-specific.
References
Decision support for licensed clinicians only; not a substitute for clinical judgement, diagnosis or local protocols.
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| Fasting triglycerides | 150 mg/dL |
|---|---|
| Fasting glucose | 100 mg/dL |
→TyG index8.92
- Formula：ln(TG × glucose / 2), mg/dL
- Note：Higher values indicate greater insulin resistance; cut-offs vary by population (~4.5 often used).
Frequently asked questions
- What is Triglyceride-Glucose (TyG) Index?
- Estimate insulin resistance with the triglyceride-glucose (TyG) index.
- How is Triglyceride-Glucose (TyG) Index calculated? What is the core formula?
- TyG = ln(fasting TG × fasting glucose / 2), mg/dL. Higher values = more insulin resistance.
- When is Triglyceride-Glucose (TyG) Index used?
- Surrogate marker of insulin resistance from routine labs.
- What are the key clinical points for Triglyceride-Glucose (TyG) Index?
- Derived from a standard lipid/glucose panel. Correlates with cardiometabolic risk. Thresholds are population-specific.
- What are the limits and cautions when using Triglyceride-Glucose (TyG) Index?
- For licensed clinicians and clinical researchers. Interpret results with history, investigations and local protocols; not a diagnosis or prescription, and not a substitute for multidisciplinary decision-making or local guidelines.
- How is Triglyceride-Glucose (TyG) Index calculated in practice? Can you show a worked example?
- Inputs: Fasting triglycerides 150 mg/dL, Fasting glucose 100 mg/dL → Result: TyG index 8.92（Formula: ln(TG × glucose / 2), mg/dL, Note: Higher values indicate greater insulin resistance; cut-offs vary by population (~4.5 often used).）