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Cholesteryl Esterase, Catalytic Concentration

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

This test measures cholesteryl esterase enzyme activity. This enzyme helps break down cholesteryl esters during lipid processing.

Quick summary

["The result reflects the activity of an enzyme involved in cholesterol handling."]

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

Key facts at a glance

LOINC
24079-6
Short code
Cholest Est Fib-cCnt
Synonyms
Cholest Est Fib-cCnt
Category
lipid
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
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

What is this test?

This test measures the catalytic activity of cholesteryl esterase, an enzyme that helps break down cholesteryl esters. The compressed test abbreviation does not clearly identify the specimen or laboratory method, so those details may vary by order.

Why might I need this test?

A clinician may order this test as part of an evaluation of how the body processes cholesterol and other lipids. It may be used alongside other lipid, liver, or genetic tests rather than as a stand-alone diagnosis.

How is the test performed?

A laboratory sample is analyzed to measure the enzyme's catalytic activity. The laboratory uses the reporting method and specimen specified on your test order.

How do I prepare for the test?

Follow the instructions provided by your clinician or laboratory. Preparation can depend on the specimen and method used, so ask whether fasting or other special preparation is required.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Cholesteryl esterase activity outside the expected range may reflect altered cholesterol or lipid metabolism. Results can also be influenced by liver or other health conditions, medications, specimen handling, and laboratory methods, so they should be interpreted together with other findings.

Short name

Cholesteryl esterase activity

Frequently asked questions

What does catalytic concentration mean?
It is a way of reporting how much enzyme activity is present in the tested sample. It is not the same as measuring the total amount of cholesterol.
Does this test diagnose a specific condition?
No. An abnormal result is nonspecific and must be interpreted by a healthcare professional using your symptoms, medical history, and other test results.
Which specimen is used?
The compressed abbreviation does not clearly specify the specimen. Confirm the required sample and preparation instructions with the ordering clinician or laboratory.
  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