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Cholesterol, Stone — Mass Fraction

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

Measures the proportion of cholesterol in a kidney, gallbladder, or other stone sample that has been removed for laboratory analysis.

Quick summary

["This test shows how much of a removed stone is made up of cholesterol."]

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

Key facts at a glance

LOINC
54438-7
Short code
Cholest MFr Stone
Synonyms
Cholest MFr Stone
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 laboratory test measures the amount of cholesterol in a stone specimen. It is used to determine whether cholesterol makes up all or part of the stone.

Why might I need this test?

Stone analysis may be requested when a gallbladder stone, kidney stone, or another type of stone is removed. Knowing the stone's composition can help your clinician understand the reason it formed and guide advice about preventing future stones.

How is the test performed?

A stone removed during surgery or another medical procedure, or one collected by a clinician, is sent to the laboratory. The laboratory measures and reports the cholesterol content as a proportion of the stone.

How do I prepare for the test?

This test does not require fasting or a blood draw. If you have a stone that was collected, follow your clinician's instructions for placing it in the provided container and transporting it to the laboratory.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Stone cholesterol

Frequently asked questions

Is this the same as a blood cholesterol test?
No. This test measures cholesterol within a removed stone, not cholesterol circulating in the blood. A separate lipid panel is used to assess blood cholesterol.
What types of stones can be tested?
A stone removed by a clinician can be analyzed depending on the laboratory's test menu. This may include a gallbladder stone, kidney stone, or another type of stone.
Will the result prevent future stones?
The result can help identify what formed the stone, which may support more targeted prevention advice. Your clinician will interpret the result together with the stone's location and your medical history.
  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