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Triglycerides (from lipid profile)

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

This test measures the amount of triglycerides, a type of fat found in your blood. Triglycerides are a key part of your lipid (fat) profile, which helps assess your heart health.

Quick summary

["Triglycerides are an important marker for cardiovascular risk and metabolic health."]

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

Key facts at a glance

LOINC
105518-5
Short code
TRIGLYCERIDESFROMLIPIDPROFILE
Synonyms
—
Category
glucose
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Ref low
0
Ref high
150
Fasting
true
Population
adult
Sex
all
Age range
18–65 years
CPT
84478
SNOMED
272076007
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

Why This Test Matters

Your triglyceride levels help doctors understand your risk for heart disease, high cholesterol, or other metabolic conditions. High levels may indicate poor diet, obesity, or conditions like diabetes or thyroid disorders.

What to Expect Before the Test

No special preparation is needed, but you may be asked to fast for 8–12 hours before the test if it’s part of a full lipid panel. Bring any medications you’re taking to your appointment.

How the Test Works

A small blood sample is drawn from your arm. The lab then measures the triglycerides in your serum or plasma using an automated, precise method to detect their concentration.

What Your Results Mean

Results are typically reported as a numerical value (in mg/dL or mmol/L), but your doctor will interpret them in relation to your overall health. Very high or very low levels may trigger further testing or lifestyle advice.

Reference range

Normal: <150 mg/dLN/A

Specimen: serum

Fasting for 12-14 hours preferred. Water is permitted. Avoid alcohol for 24 hours before the test.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

High triglyceride levels (often above 150 mg/dL) can increase the risk of heart disease, stroke, or pancreatitis. They may also signal underlying conditions like diabetes, kidney disease, or metabolic syndrome. Low levels (below 50 mg/dL) are less common but may indicate liver disease or malnutrition.

Short name

Triglycerides

Frequently asked questions

What causes triglyceride levels to change?
Several factors influence triglycerides, including diet (especially sugary or fried foods), alcohol consumption, physical activity, genetics, and certain medications (like beta-blockers or steroids). Stress, pregnancy, and hormonal changes can also play a role.
How often should I get this test?
Your doctor will recommend how often to check your triglycerides based on your overall health, risk factors, and medical history. Typically, adults with no risk factors may get it every 5–10 years, while those with risk factors (like high cholesterol or diabetes) may need it more frequently.
Can lifestyle changes lower my triglycerides?
Yes! Small changes like eating a heart-healthy diet (rich in fiber, fruits, and vegetables), reducing sugar and saturated fats, exercising regularly, and maintaining a healthy weight can significantly lower triglycerides. Avoiding alcohol and quitting smoking also helps.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

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