The triglycerides test is not always a definitive test.
Sometimes, an abnormal triglyceride level is a symptom of an underlying medical condition. For instance, medical conditions like diabetes, cirrhosis, nephritic syndrome or kidney disease, pancreatitis, or genetic factors can lead to high triglyceride levels. Hyperthyroidism, malabsorption syndrome, malnutrition, or a low-fat diet can cause low triglyceride levels.
Sometimes your doctor can determine the reason for the abnormal levels after learning about your lifestyle, dietary choices, and medical history. At other times, you may have to undergo more tests to determine the root cause of an abnormal triglyceride level.