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Total triglycerides in serum/plasma (mass concentration)

Published: August 9, 2026Updated: August 16, 2026

This test measures the amount of triglycerides, a type of fat found in your blood, using a sample of your serum or plasma.

Quick summary

["Triglycerides help your body store and use energy, but high levels may raise your risk of heart disease."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
12951-0
Short code
Trigl SerPl Calc-mCnc
Synonyms
Trigl SerPl Calc-mCnc
Category
glucose
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
true
Population
adult
Sex
all
Age range
18–65 years
Method
calculated
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

What Triglycerides Tell Us About Your Health

Triglycerides are a key part of your blood lipid profile, along with cholesterol. They’re made from fats and carbohydrates your body uses for energy. High triglyceride levels can contribute to plaque buildup in your arteries, increasing the risk of heart attack or stroke. This test helps doctors assess your risk for cardiovascular disease and guide treatment plans, such as diet or medication adjustments.

How the Test Works

Your blood sample is drawn and processed to separate serum or plasma. The triglycerides are then measured using a specialized lab technique, often an enzymatic method that converts triglycerides into a form that can be detected and quantified precisely.

Why This Test Might Be Ordered

Doctors may order this test if you have risk factors for high triglycerides, such as obesity, diabetes, high alcohol intake, or a family history of heart disease. It’s also part of routine lipid panels to monitor cholesterol and fat levels, especially if you’re taking medications like statins or fibrates.

What to Expect Before the Test

No special preparation is usually needed, but you may be asked to fast for 8–12 hours before the test if your doctor recommends it. Fasting helps provide a more accurate reading of your triglyceride levels. Avoiding alcohol, heavy meals, or strenuous exercise for that time can also help.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Triglycerides

Frequently asked questions

What does a high or low triglyceride level mean?
High triglyceride levels (above normal ranges) can strain your heart and blood vessels. Very high levels (1,500 mg/dL or higher) may require medical attention to prevent complications. Low levels are less common and usually not a concern unless they’re due to underlying conditions like liver disease or malnutrition.
How often should I get this test?
Your doctor will determine how often you need this test based on your health status, risk factors, and treatment plan. For example, people with diabetes or heart disease might get it checked more frequently than others.
Can lifestyle changes affect triglyceride levels?
Yes! Eating a balanced diet low in sugars and refined carbs, exercising regularly, and maintaining a healthy weight can help lower triglycerides. Avoiding alcohol and quitting smoking also supports better blood fat control.
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy