Triglycerides test: normal range and what high triglycerides mean

A triglycerides test measures the main fat circulating in your blood, the form the body uses to store spare energy. Mildly raised triglycerides usually travel with other metabolic signs and add to heart risk, while very high levels carry a risk of pancreatitis, so the result is read in bands.

What triglycerides are

The body uses triglycerides for energy and stores extra calories as triglycerides in fat cells until they are needed. In the blood they travel in lipoproteins: mainly VLDL particles made by the liver and the remnants left as VLDL is broken down, and after a meal also in chylomicrons.

Because these particles carry cholesterol and ApoB as well, the 2019 ESC/EAS guideline reads a high triglyceride level as a sign of more triglyceride-rich particles in circulation. Their link with heart risk seems to run through the number of those particles rather than through the triglyceride itself.

Normal range

The US National Cholesterol Education Program and the Endocrine Society use these bands for a fasting sample:

Category	mmol/L	mg/dL
Normal	Below 1.7	Below 150
Borderline high	1.7 to 2.3	150 to 199
High	2.3 to 5.6	200 to 499
Very high	5.6 or above	500 or above

The EAS and EFLM consensus asks labs to flag 1.7 mmol/L (150 mg/dL) or above on a fasting sample, and 2 mmol/L (175 mg/dL) or above on a non-fasting one. The 2019 ESC/EAS guideline sets no triglyceride goal, but notes that below 1.7 mmol/L indicates lower risk. Above 10 mmol/L (880 mg/dL), the main concern becomes pancreatitis. Children and teenagers have their own ranges, ranges vary by lab and method, and your report's own range is the one to read your result against.

What a high result usually points to

Mild and moderate rises are common. The Endocrine Society names the usual contributors as extra weight, physical inactivity, excess alcohol, metabolic syndrome and type 2 diabetes, often on top of an inherited tendency. Diets high in sugar and refined carbohydrate raise triglycerides too.

Other causes a doctor considers are kidney disease, liver disease, an underactive thyroid, untreated diabetes and pregnancy, and medicines including thiazide diuretics, beta-blockers, oral oestrogens, isotretinoin, corticosteroids, some HIV medicines and some antipsychotics.

A doctor typically repeats a high result on a fasting sample, since the Endocrine Society bases the diagnosis on fasting levels, and looks for the secondary causes above. With high triglycerides, LDL can understate risk, so ApoB and non-HDL cholesterol are read alongside it. For results between 10 and 20 mmol/L, NICE advises a fasting repeat after 5 days to 2 weeks and specialist advice if the level stays above 10 mmol/L. Above 20 mmol/L, when alcohol or poorly controlled diabetes does not explain it, NICE advises urgent specialist review.

What a low result usually points to

MedlinePlus describes triglyceride levels that are too low as very uncommon. A low result is read with the rest of the profile and with any symptoms.

What moves it

• Your last meal. Triglycerides are the lipid most affected by eating: 1 to 6 hours after an ordinary meal they are on average about 0.3 mmol/L higher, and a very fatty meal can push a single result much higher.
• Alcohol. Alcohol has a major effect on triglycerides, especially in people whose levels already run high.
• Sugar and refined carbohydrate. Refined carbohydrate raises triglycerides, and regular fructose intake above 10% of energy adds to them; at 15% to 20% of energy, triglycerides can rise by 30% to 40%. Table sugar is a major source of fructose.
• Weight and exercise. Weight loss lowers triglycerides, and regular exercise lowers them beyond the effect of weight loss. Exercise the day before a fatty meal also blunts the rise after it.
• Pregnancy. In a normal pregnancy, triglycerides rise by about half and can double.
• Ancestry. The EAS and EFLM consensus notes that people of South Asian descent are more likely to have severe triglyceride rises than people of white or black descent.
• The lab method. Most labs do not subtract the body's own glycerol from the result. This rarely matters, but it can overstate triglycerides during heparin or intravenous fat infusions.

Preparing for the test

Guidance differs. The EAS and EFLM consensus accepts non-fasting samples for routine lipid testing and suggests avoiding a high-fat fast-food meal on the day, while the Endocrine Society bases a diagnosis of high triglycerides on a fasting sample. MedlinePlus says you may be asked to fast for 9 to 12 hours. In Clare's panel the draw is fasting, because fasting glucose and fasting insulin share it, so follow the fasting instructions you are given, and mention any medicines or a pregnancy to the person taking the sample.

How Clare's panel handles it

In Clare's panel, triglycerides are measured by the lab. Clare uses them in two calculated results: the triglycerides / HDL ratio (triglycerides divided by HDL) and the atherogenic index of plasma, the base-ten logarithm of that ratio with both values in mmol/L: AIP = log10(TG/HDL). When LDL is calculated with the Friedewald formula, triglycerides enter that calculation too.

Why it matters in the UAE

In the UAE National Diabetes and Lifestyle Study, 29% of 824 Emirati adults in the Northern Emirates had triglycerides of 1.7 mmol/L (150 mg/dL) or above, on fasting samples taken in 2012 and 2013. Weight carried around the waist and diabetes were both linked with high triglycerides, and so was smoking in men. The study covered Emirati nationals, not the whole population.

During Ramadan, meal times shift for a month. A 2019 meta-analysis of 33 studies in healthy people found no significant average change in triglycerides across Ramadan, with individual changes tracking age, starting level and weight change.

Price

Triglycerides are usually sold within a lipid profile test. When we read public prices on 11 October 2026, a lipid profile cost from 89 to 199 at six UAE providers. VAT was rarely stated, and some prices included a home visit while one provider added a collection fee on smaller orders.

Related tests

HDL Cholesterol belongs in the same glance, since high triglycerides and low HDL often appear together. The HbA1c and diabetes test, including Fasting Insulin, shows whether insulin resistance sits behind a raised level, and the post HbA1c, glucose and insulin: reading them together explains that pattern. Remnant Cholesterol estimates the cholesterol carried on the same triglyceride-rich particles.

Why the number means more over time

Triglycerides respond to meals and alcohol more than the other lipids do, and one review put about 60% of the variation in a person's reported lipid result down to behaviour, health and the way the sample is taken. A run of results taken under the same conditions, fasting each time for example, shows the trend more clearly than any single figure. NICE recommends a full lipid profile 2 to 3 months after starting or changing lipid-lowering treatment. Clare is opening with a waitlist at clare.health.