Triglycerides 0.78mmol/L is not low and is within the normal range, the reference range may vary slightly in different hospitals, consult your doctor for test results. The normal value of serum triglycerides is 0.56～1.69mmol/L, and the reference range may vary slightly in different hospitals. Triglycerides <0.56mmol/L is considered as hypertriglyceridemia, which can be seen in the absence of β-lipoproteinemia, gastrointestinal diseases, endocrine diseases, the use of heparin drugs and other conditions. Therefore, triglyceride 0.78mmol/L is not low and belongs to the normal range. If the serum triglyceride is lower than or exceeds the normal range or there is other physical discomfort, it is recommended to consult a doctor in time for treatment.