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Cholesterol Crystals, Bile Fluid — Qualitative Light Microscopy

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

A microscopy test that checks bile fluid for cholesterol crystals. It may help evaluate gallbladder or bile-duct disease.

Quick summary

["This test looks for cholesterol crystals in bile, which can occur with abnormalities in bile composition or gallbladder function."]

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

Key facts at a glance

LOINC
34472-1
Short code
Cholest Cry Bifl Ql Micro
Synonyms
Cholest Cry Bifl Ql Micro
Category
lipid
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
microscopy-light
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 examines bile fluid under a microscope to determine whether cholesterol crystals are present. It is different from a routine blood cholesterol test.

Why might I need this test?

A clinician may order it when evaluating gallbladder or bile-duct problems, particularly when symptoms suggest gallstones, bile obstruction, or inflammation. It may also be used to assess the composition of bile collected during a procedure.

How is the test performed?

Bile is collected during a procedure such as endoscopic retrograde cholangiopancreatography, or it may be obtained during surgery. A laboratory technician places the specimen under a microscope and reports whether cholesterol crystals are identified.

How do I prepare for the test?

Preparation depends on how the bile will be collected. Follow the instructions for your procedure, including any fasting, medication, or sedation requirements. Do not stop medicines unless your clinician specifically tells you to do so.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Cholesterol crystals in bile can reflect bile that is rich in cholesterol or slow gallbladder emptying, which may occur with gallstones or gallbladder disease. Their presence should be interpreted with symptoms, examination findings, imaging, and other laboratory results because crystals alone do not establish a diagnosis.

Short name

Bile Cholesterol Crystals

Frequently asked questions

Does this test measure blood cholesterol?
No. It examines bile fluid for cholesterol crystals and is separate from a standard blood cholesterol panel.
How is bile collected?
Bile is usually collected during an endoscopic procedure or surgery. Your care team will provide instructions based on the planned collection method.
Do cholesterol crystals always mean I have gallstones?
No. Crystals can occur with changes in bile composition or gallbladder emptying, but they do not confirm gallstones by themselves. The result must be interpreted with your clinical findings and other tests.
  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