Individuals can check their triglyceride levels with blood tests, and doctors can help evaluate the results to determine whether triglyceride levels are within a healthy range, according to MedlinePlus. Normal values commonly fall under 150 milligrams per deciliter.
Generally, a borderline high result falls between 150 to 199 milligrams per deciliter, a high result falls between 200 to 499 milligrams per deciliter and a very high result is 500 milligrams per deciliter or above. However, interpretations may differ depending on the laboratory and the specimen, states MedlinePlus.
High triglyceride levels may be a symptom of liver damage, an underactive thyroid or a kidney disorder, MedlinePlus reports. It may also indicate a low-protein, high-carbohydrate diet. In diabetics, it may suggest poor management of their conditions. High triglyceride levels may also increase an individual's risk of stroke, heart disease and pancreatitis. Low triglyceride levels may point to an overactive thyroid, malabsorption, malnutrition or a low-fat diet.
Individuals who smoke, drink a lot of alcohol or consume large amounts of carbohydrates are more likely to have high triglyceride levels. Similarly, individuals who are overweight and sedentary are also at risk. In some cases, certain medications or health conditions can cause high triglyceride levels. Individuals may correct their triglyceride levels by improving their diets and engaging in more physical activities. They may also need medications to help them control their triglyceride levels, advises MedlinePlus.