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Total Triglycerides (Serum)

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

This test measures the amount of triglycerides, a type of fat, in your blood serum. Triglycerides are a key component of lipids (fats) and play a role in energy storage and metabolism.

Quick summary

["Triglycerides help assess heart health and risk of fatty liver disease."]

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

Key facts at a glance

LOINC
14448-5
Short code
Trigl Smn-mCnc
Synonyms
Trigl Smn-mCnc
Category
glucose
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
true
Population
adult
Sex
all
Age range
18–65 years
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

High triglyceride levels can increase your risk of heart disease, stroke, or other health problems. Your doctor may recommend this test if you have a family history of high triglycerides, diabetes, obesity, or certain medications that affect lipid levels.

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 your doctor specifies it. If you’re fasting, avoid eating or drinking anything except water. Bring any medications you’re currently taking to your appointment.

During the Test

A healthcare professional will draw blood from a vein in your arm. You may feel a slight pinch, but the process is quick and usually painless. The blood sample is then sent to a lab for analysis.

What the Results Mean

Results are typically reported in milligrams per deciliter (mg/dL). While specific reference ranges vary by lab, high levels (often above 150 mg/dL) may signal a need for lifestyle changes or medical evaluation.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Triglycerides

Frequently asked questions

How long does it take to get my results?
Results are usually available within 1–3 business days, depending on your lab and insurance. Some labs may provide preliminary results sooner, but confirm with your healthcare provider for exact timelines.
Can I eat or drink anything before my test?
If fasting is required, avoid food and liquids (except water) for 8–12 hours before the test. If your doctor does not specify fasting, you can eat and drink normally. Always follow your provider’s instructions precisely.
What should I do if my triglycerides are high?
If your results are elevated, your doctor may recommend lifestyle changes such as a heart-healthy diet, increased physical activity, or weight management. They may also prescribe medications like fibrates or statins to help lower levels. Follow their guidance closely.
  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