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Non-HDL Cholesterol, Fasting, Serum/Plasma — Calculated

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

A calculated measure of cholesterol carried by atherogenic lipoproteins, used to help assess cardiovascular risk.

Quick summary

["Higher non-HDL cholesterol can indicate an increased amount of cholesterol that contributes to plaque formation."]

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

Key facts at a glance

LOINC
74435-9
Short code
NE Cholest SFr SerPl GC
Synonyms
NE Cholest SFr SerPl GC
Category
lipid
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
gc
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 is this test?

Non-HDL cholesterol is calculated by subtracting HDL cholesterol from total cholesterol. It represents cholesterol carried by LDL, VLDL, intermediate-density lipoproteins, and lipoprotein(a).

Why might I need this test?

This test may be used to assess cardiovascular risk, particularly when a standard cholesterol panel does not provide enough information or when triglycerides are elevated. It can also help monitor lipid-lowering treatment.

How is the test performed?

A blood sample is collected from a vein and analyzed in a laboratory. The non-HDL result is calculated from the measured total and HDL cholesterol values.

How do I prepare for the test?

This test is commonly ordered as a fasting test. If fasting is required, avoid food and beverages other than water for the period specified by your healthcare professional, and follow any other instructions for your order.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

A high non-HDL cholesterol level indicates an increased amount of cholesterol carried by lipoproteins that can contribute to atherosclerosis. This may reflect genetic or lifestyle factors and can support decisions about diet, physical activity, or cholesterol-lowering treatment. Results should be interpreted with the rest of the lipid panel and your overall cardiovascular risk.

Short name

Non-HDL cholesterol

Frequently asked questions

Is non-HDL cholesterol the same as LDL cholesterol?
No. LDL cholesterol is one component of non-HDL cholesterol, while non-HDL also includes cholesterol carried by VLDL, intermediate-density lipoproteins, and lipoprotein(a).
Why is non-HDL cholesterol useful when triglycerides are high?
Trigonlycerides can make the calculated LDL cholesterol estimate less reliable. Non-HDL cholesterol provides an additional measure of atherogenic cholesterol that can be used alongside the other lipid results.
Does this test require fasting?
Fasting is commonly required for this test, but instructions can vary. Confirm the preparation requirements on your laboratory order before your appointment.
  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