TyG Index Calculator

About this calculator

The TyG (triglyceride-glucose) index is calculated as TyG = ln(fasting triglycerides [mg/dL] × fasting glucose [mg/dL] ÷ 2) — a simple logarithmic combination of two routine lab values that has been validated in multiple clinical studies as a surrogate marker of insulin resistance, correlating closely with the more invasive hyperinsulinemic-euglycemic clamp technique and with HOMA-IR.

Because it needs only a standard fasting lipid panel and fasting glucose (no insulin assay, which many labs don't run routinely), researchers and primary-care clinicians use TyG as a low-cost screening tool for insulin resistance and cardiometabolic risk, particularly in population studies and in settings where insulin testing is unavailable or expensive — though it is a research-oriented index rather than a formally established diagnostic cutoff for any single disease.