Triglycerides in Serum or Plasma (Mass Concentration)

Why This Test Matters

Triglycerides are a form of fat that your body uses for energy. High levels can increase your risk of developing heart disease, stroke, or other health problems. This test helps your healthcare provider monitor your overall health and guide treatment plans, such as diet or medication adjustments.

What to Expect Before the Test

No special preparation is usually needed for this test. You may be asked to fast for 8–12 hours before the test if it’s part of a lipid panel, but this is not always required. If you’re unsure, check with your provider. Blood is drawn from a vein in your arm.

What the Results Mean

Your results will show the amount of triglycerides in your blood. While specific reference ranges vary by lab, higher-than-normal levels may signal increased cardiovascular risk, while lower levels may indicate better metabolic health. Your provider will interpret results in the context of your overall health.

Common Causes of Abnormal Results

High triglyceride levels may be linked to diet high in sugars or fats, obesity, diabetes, kidney disease, or certain medications. Low levels could result from genetic factors, liver disease, or certain medications. Your provider will discuss possible causes with you.