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Endoscopic bile duct brush cytology (for cytologic examination of bile duct cells)

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

This test involves collecting cells from your bile ducts during an endoscopic procedure to check for abnormalities like cancer or inflammation.

Quick summary

["A simple procedure to examine cells from your bile ducts for potential health concerns."]

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

Key facts at a glance

LOINC
111872-8
Short code
Img-Enhncd endoscpy SB Endscpy
Synonyms
Img-Enhncd endoscpy SB Endscpy
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
endoscopy
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 Used For?

This test helps doctors diagnose conditions affecting the bile ducts, such as bile duct strictures, tumors, or infections. It may also be used to monitor known bile duct issues or screen for early signs of cancer.

How Is the Procedure Performed?

You’ll be sedated during the procedure, which involves inserting a scope through your mouth into your bile ducts. A brush is used to collect cells from the duct walls. The sample is then sent to a lab for microscopic examination.

What Are Possible Results?

Results may indicate normal cells, inflammation, or suspicious changes (e.g., abnormal growths). Your doctor will interpret findings in the context of your medical history and symptoms.

Preparation and Risks

No special preparation is needed, but inform your doctor about medications or allergies. Rare risks include bleeding or infection, though serious complications are uncommon.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: This test plays a key role in diagnosing and managing bile duct disorders, ensuring early detection of malignant or precancerous changes that may require treatment.

Short name

Bile Duct Brush Cytology

Frequently asked questions

Why was I asked to have this test?
Your doctor may recommend this test if you have symptoms like jaundice (yellowing skin), unexplained weight loss, or if you’ve been diagnosed with a bile duct-related condition.
What happens next after the test?
Your results will be reviewed by a pathologist or specialist. Follow-up may include additional tests (e.g., imaging) or treatment plans based on findings.
Can I eat or drink before the procedure?
You may eat a light meal the night before, but avoid solid foods for 6–8 hours before the procedure to reduce nausea risk.
  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