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Total Cholesterol, Mass Concentration in Serum

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

This test measures the total amount of cholesterol in your blood, which includes both the cholesterol your body makes and the cholesterol you get from foods like fatty foods.

Quick summary

["Cholesterol levels help assess your risk for heart disease and other health conditions."]

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

Key facts at a glance

LOINC
14446-9
Short code
Trigl CSF-mCnc
Synonyms
Trigl CSF-mCnc
Category
glucose
Sample
csf
Container
Sterile tube
Units
N/A
Fasting
true
Population
adult
Sex
all
Age range
18–65 years
Specimen volume
1-2 mL
Stability
Immediate analysis required, Refrigerated: 1h
Hemolysis max
200
TAT
4–24 hours
Order
routine

Why It’s Done

Your healthcare provider may order this test to check your cholesterol levels as part of a general health checkup, to monitor existing health conditions like high cholesterol, or to evaluate your risk for heart disease. It’s often done alongside other lipid tests, such as HDL (good cholesterol) and triglycerides.

What to Expect

A small blood sample is taken from a vein in your arm. You may feel a slight pinch, but it usually doesn’t cause discomfort. The test is quick and typically done in a doctor’s office or lab.

How It Works

The blood sample is sent to a lab where it’s analyzed to determine the total cholesterol concentration. This involves breaking down the blood into its components and measuring the cholesterol present.

What the Results Mean

Results are used to help determine if your cholesterol levels are within a healthy range or if lifestyle or medical interventions are needed. While specific ranges can vary by lab, high levels may signal a need for dietary changes, exercise, or medication.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

High cholesterol can contribute to plaque buildup in your arteries, increasing the risk of heart disease, stroke, or peripheral artery disease. Regular monitoring helps manage risk factors and prevents long-term health complications.

Short name

Total Cholesterol

Frequently asked questions

What causes high cholesterol levels?
High cholesterol can result from a combination of factors, including genetics, diet high in saturated or trans fats, lack of physical activity, obesity, and certain medical conditions like diabetes or hypothyroidism. Lifestyle changes and medical treatments can help manage it.
How long does it take to get results?
Results are usually available within a few days, depending on your lab’s processing time. Your healthcare provider will discuss the findings with you during your follow-up visit.
Can I eat or drink anything before the test?
For most cholesterol tests, you may need to fast for 12 hours before the blood draw to get accurate results. Your provider will give specific instructions if this applies to you.
  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