⚠️ Educational only. LabPlain does not provide medical advice or diagnosis. Always discuss your specific results with your healthcare provider.
What this test measures
Triglycerides are a type of fat found in your blood. After you eat, your body converts extra calories it doesn't immediately need into triglycerides and stores them in fat cells for future energy use.
When your body needs energy between meals, hormones release triglycerides from storage. Some triglycerides are normal and necessary — but high levels over time increase your risk of heart disease, stroke, fatty liver disease, and pancreatitis.
Doctors usually measure triglycerides as part of a standard lipid panel alongside cholesterol tests like LDL, HDL, and total cholesterol.
Normal reference range
Normal: Less than 150 mg/dL | High: 200+ mg/dL
Most labs classify triglycerides as: normal under 150 mg/dL, borderline high between 150–199 mg/dL, high between 200–499 mg/dL, and very high at 500 mg/dL or higher.
Triglyceride levels can rise significantly after eating, so many doctors prefer a fasting blood test for the most accurate result.
⏰ Why fasting matters
Eating before a triglycerides test can temporarily raise levels for several hours. That's why many lipid panels are done after fasting for 9–12 hours. Water is usually allowed, but food, alcohol, and sugary drinks can affect the result.
What your result might indicate
↑ If High
High triglycerides are commonly linked to obesity, diabetes, insulin resistance, alcohol use, poor diet, metabolic syndrome, or genetic lipid disorders. Very high levels increase the risk of pancreatitis.
↓ If Low
Low triglycerides are usually not dangerous and are often seen in people with healthy diets, regular exercise habits, or low body fat. Occasionally, very low levels may reflect malnutrition or an overactive thyroid.
Symptoms associated with abnormal triglycerides
↑ High Triglycerides Symptoms
Often no symptoms at all
Abdominal pain in severe cases
Fatty liver disease
Weight gain around the abdomen
High blood sugar or diabetes
Skin deposits called xanthomas
Increased risk of heart disease
Pancreatitis if extremely elevated
↓ Low Triglycerides Symptoms
Usually no symptoms
Low body weight
Poor calorie intake
Nutritional deficiencies
Hyperthyroidism symptoms
Unintentional weight loss
Fatigue or weakness
Digestive absorption problems
Common causes of abnormal triglycerides
What can raise triglycerides?
The most common causes of elevated triglycerides are diets high in sugar and refined carbohydrates, obesity, insulin resistance, poorly controlled diabetes, excessive alcohol use, and lack of exercise. Certain medications — including steroids, estrogen therapy, beta blockers, and some HIV medications — can also raise triglycerides.
Genetics also play a role. Some people inherit conditions that make it difficult for the body to process fats properly, leading to very high triglyceride levels even with a healthy lifestyle.
What can lower triglycerides?
Low triglycerides are often seen in people who exercise regularly, maintain a healthy weight, or eat balanced diets low in processed carbohydrates. Less commonly, low levels may be linked to malnutrition, malabsorption disorders, or hyperthyroidism.
Tests often ordered alongside triglycerides
Triglycerides are usually interpreted alongside other heart and metabolic health markers. Your doctor may also order:
Total cholesterol — measures overall cholesterol in the blood
LDL cholesterol — often called "bad" cholesterol linked to artery buildup
HDL cholesterol — the "good" cholesterol that helps remove excess cholesterol
Hemoglobin A1C — screens for diabetes and blood sugar control
Liver enzymes (ALT/AST) — high triglycerides are associated with fatty liver disease
What to do next
A mildly elevated triglycerides result is very common and often improves with lifestyle changes like reducing sugar and alcohol intake, losing weight, increasing exercise, and improving blood sugar control. Extremely high levels are more serious because they can increase the risk of pancreatitis. Your doctor will interpret your result alongside your cholesterol levels, medical history, medications, and overall cardiovascular risk.
Questions to ask your doctor
01Was my triglycerides test done fasting, and does that affect the interpretation?
02How do my triglycerides compare to my LDL and HDL cholesterol levels?
03Could diabetes or insulin resistance be contributing to this result?
04Could any medications or alcohol use be affecting my triglycerides?
05What lifestyle changes would have the biggest impact on lowering my levels?
06Do I need medication, or should we repeat the test later?
Frequently asked questions
Can eating before the test raise triglycerides?
Yes. Triglycerides can rise significantly after eating, especially after meals high in sugar, carbohydrates, or fat. That's why many doctors recommend fasting before a lipid panel.
How can I lower triglycerides naturally?
The most effective lifestyle changes are reducing added sugar and alcohol, losing excess weight, exercising regularly, improving diabetes control, and eating more fiber-rich foods. Even modest weight loss can lower triglycerides significantly.
Are high triglycerides dangerous?
Moderately elevated triglycerides increase long-term cardiovascular risk. Very high levels — especially above 500 mg/dL — can trigger pancreatitis, which is a serious and painful inflammation of the pancreas.
Does alcohol affect triglycerides?
Yes. Alcohol can significantly raise triglycerides, especially in people who are already prone to elevated levels. Even moderate drinking may worsen triglycerides in some individuals.
What's the difference between triglycerides and cholesterol?
Triglycerides store unused calories for energy, while cholesterol is used to build cells and hormones. Both circulate in the blood, but they serve different roles and contribute differently to heart disease risk.