What this test measures
Triglycerides are the most common type of fat in your body — they store unused calories and provide energy between meals. Blood triglyceride levels reflect a combination of recent dietary intake (particularly carbohydrates, alcohol and refined fats), your body's metabolic state, and genetics. The test measures the concentration in mg/dL after an overnight fast.
Why it matters
High triglycerides are an independent cardiovascular risk factor and a marker of insulin resistance — the metabolic state behind type 2 diabetes, fatty liver and metabolic syndrome. They are particularly common in Indians, often coexisting with low HDL and central obesity (the "Indian phenotype"). At very high levels (≥500 mg/dL), triglycerides risk acute pancreatitis — a medical emergency.
Triglycerides also feature in the Friedewald formula used to calculate LDL when LDL is not measured directly; the formula becomes unreliable when triglycerides exceed 400 mg/dL.
How to prepare
Fast for 9–12 hours (water is allowed). Triglycerides rise sharply after a meal — a non-fasting sample can over-estimate by 50–100%. Avoid alcohol for 24 hours before the test. Continue regular medications unless your doctor instructs otherwise.
Markers & reference ranges
Reference ranges below are typical adult values. Your lab's reported range may differ slightly based on the assay platform and patient demographics — always read your report against the range printed on it.
| Marker | Normal range | If low | If high |
|---|---|---|---|
| Triglycerides (mg/dL)[1][2] | < 150 normal · 150 – 199 borderline · 200 – 499 high · ≥ 500 very high (pancreatitis risk) | Low triglycerides (<50 mg/dL) are not concerning in isolation. May rarely reflect malnutrition or hyperthyroidism. | 150–199 borderline — lifestyle review. 200–499 high — lifestyle change is first-line; medication if cardiovascular risk is high. ≥ 500 very high — urgent, risk of acute pancreatitis; treatment with fenofibrate or omega-3 in addition to lifestyle. The higher the level, the more carb-restricted the diet needs to become. |
How to read your triglycerides result
| Triglycerides (mg/dL) | Status | Action |
|---|---|---|
| < 150 | Normal | Maintain lifestyle; re-check with full Lipid Profile per schedule |
| 150 – 199 | Borderline high | Lifestyle review (reduce refined carbs, alcohol, weight); re-check in 6 months |
| 200 – 499 | High | Lifestyle change first-line; medication if cardiovascular risk is high |
| ≥ 500 | Very high | Urgent — pancreatitis risk; stop alcohol, restrict carbs, start fenofibrate or omega-3 |
| ≥ 1000 | Severely high | Hospitalisation may be needed — high risk of pancreatitis |
Frequently asked questions
Do I have to fast for a triglyceride test?
Yes — fast 9–12 hours. Triglycerides rise sharply after meals; a non-fasting sample can over-estimate the level significantly. Water is allowed.
Why did my triglycerides drop so much after I cut sugar?
Triglycerides are very responsive to dietary carbohydrate (especially refined sugar, white rice, white bread, sugary drinks) and alcohol. Cutting these can drop triglycerides by 30–50% within weeks — often the single most effective lifestyle change for high triglycerides.
My triglycerides are 550 — what should I do?
Above 500 mg/dL there is a real risk of acute pancreatitis (sudden severe abdominal pain). See a doctor promptly. Immediate steps: stop alcohol completely, cut refined carbohydrates drastically, and your doctor will likely start fenofibrate and/or omega-3 fatty acids.
Can I have high triglycerides with normal cholesterol?
Yes — and it is common in Indians. The "Indian dyslipidaemia" pattern is high triglycerides, low HDL, and normal-to-borderline LDL. This still raises cardiovascular risk and deserves the same lifestyle (and sometimes drug) interventions.
Does alcohol really raise triglycerides that much?
Yes. Even a moderate evening of drinking can push triglycerides 50–200 mg/dL higher the next morning. Chronic alcohol use is one of the most common reversible causes of high triglycerides.
Are high triglycerides linked to diabetes?
Yes — high triglycerides are an early marker of insulin resistance, the metabolic state that often precedes type 2 diabetes by years. People with persistent high triglycerides should also be screened for diabetes (FBS / HbA1c).
How often should I test triglycerides?
As part of a full Lipid Profile, every 5 years for low-risk adults, every 1–2 years with risk factors, and 3–6 monthly if you are on triglyceride-lowering therapy.
Related Lipids / Cardiac Risk tests
Tests commonly ordered alongside TRIGLYCERIDES, or that help interpret an unexpected result.
Sources & references
- AHA / ACC 2018 Cholesterol Guideline · accessed 2026-05-29T00:00:00.000Z
- Endocrine Society — Hypertriglyceridemia Guideline · accessed 2026-05-29T00:00:00.000Z
- NIH MedlinePlus — Triglyceride Test · accessed 2026-05-29T00:00:00.000Z
- Lipid Association of India · accessed 2026-05-29T00:00:00.000Z
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