TyG Index (Triglyceride-Glucose Index) is a calculated marker from fasting triglycerides and fasting glucose, reported within a metabolic and cardiometabolic risk panel. Higher TyG Index values suggest reduced insulin sensitivity and may be seen with insulin resistance, metabolic syndrome, non-alcoholic fatty liver disease, and dyslipidaemia (high triglycerides, low HDL-C), while lower values generally indicate more efficient glucose-lipid handling. This matters because early insulin resistance can affect energy regulation, weight gain risk, triglycerides, and cardiovascular health before HbA1c shifts. A TyG Index blood test result is best interpreted alongside fasting insulin, HbA1c, HDL-C, LDL-C, waist measures and liver enzymes (ALT/AST) to clarify drivers.
Check TyG Index alongside 70+ other markers in Vively's Baseline Health Check.
Every marker in range? Get your $99 back. T&Cs apply.Want to save 25%? Try our 4-Month Reset insteadThe TyG index (Triglyceride-Glucose index) is a calculated measure that combines fasting triglyceride and glucose levels to estimate how efficiently your body utilises insulin and processes energy. It provides a snapshot of overall metabolic health.
Your TyG index reflects how well your body balances glucose and fat metabolism. Maintaining a healthy level supports consistent energy, efficient fuel use, and optimal cellular performance, all key factors for longevity and overall wellness.
Values within the optimal range indicate balanced glucose and lipid metabolism.
TyG index levels can shift based on dietary patterns, physical activity, sleep quality, stress levels, and body composition. Diets high in refined carbohydrates or saturated fats, or inconsistent exercise habits, can raise the index over time.
A higher TyG index suggests that your body may be less efficient at managing glucose and lipids, which can impact your energy levels and metabolic efficiency. Tracking and adjusting your habits can help bring the index back within an optimal range.
Focusing on balanced meals rich in whole foods, fibre, and unsaturated fats, along with regular movement, restorative sleep, and stress management, can all help maintain a healthy TyG index. Monitoring your progress through regular blood tests provides clear feedback on your lifestyle’s impact.
This information is provided for general health and wellness purposes only and does not replace medical advice.
Among 5,852 Vively members tested in 2024 to 2026, women aged 40 to 49 had a median TyG index of 8.1 (middle half 7.8 to 8.4). Men the same age: 8.4. The lab range is under 8.7 for women and under 8.8 for men. A member median is not a target.
The line is the median member at each age. The shaded bands show where most members sit. The dashed red lines are the lab range.
| Group | Members | Median | Middle 50% | 5th to 95th percentile | Lab range |
|---|---|---|---|---|---|
| Women 18 to 29 | 251 | 7.9 | 7.6 to 8.2 | 7.4 to 8.7 | under 8.7 |
| Women 30 to 39 | 951 | 8.0 | 7.7 to 8.3 | 7.4 to 8.8 | under 8.7 |
| Women 40 to 49 | 1,114 | 8.1 | 7.8 to 8.4 | 7.5 to 9.0 | under 8.7 |
| Women 50 to 59 | 840 | 8.2 | 7.9 to 8.6 | 7.6 to 9.1 | under 8.7 |
| Women 60 and over | 475 | 8.3 | 8.0 to 8.7 | 7.7 to 9.3 | under 8.7 |
| Men 18 to 29 | 259 | 8.0 | 7.7 to 8.4 | 7.4 to 9.0 | under 8.8 |
| Men 30 to 39 | 630 | 8.2 | 7.9 to 8.5 | 7.5 to 9.2 | under 8.8 |
| Men 40 to 49 | 679 | 8.4 | 8.0 to 8.8 | 7.6 to 9.4 | under 8.8 |
| Men 50 to 59 | 399 | 8.5 | 8.1 to 8.8 | 7.7 to 9.5 | under 8.8 |
| Men 60 and over | 254 | 8.5 | 8.1 to 8.8 | 7.8 to 9.5 | under 8.8 |
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What is a normal TyG index for my age?
Among 5,852 Vively members (first blood test, January 2024 to October 2026), the median TyG index for women was 7.9 at 18 to 29, 8.0 at 30 to 39, 8.1 at 40 to 49, 8.2 at 50 to 59 and 8.3 at 60 and over. For men it was 8.0 at 18 to 29, 8.2 at 30 to 39, 8.4 at 40 to 49, 8.5 at 50 to 59 and 8.5 at 60 and over.
The lab range is under 8.7 for women and under 8.8 for men. A member median is not a target or a diagnosis. If your result is outside the range on your report, talk to your GP.
How to get it: Included in the Baseline Health Check. A GP from our network signs your request after a short telehealth consult, so you don't need to visit your own GP first. See how a blood test without a referral works.
Related tests: Uric Acid, Fasting Glucose, Insulin, HOMA-IR
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