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Urinary Total Bile Acids (Mass Concentration)

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

This test measures the amount of bile acids present in your urine. Bile acids help digest fats and are produced by your liver.

Quick summary

["Bile acids in urine can reflect liver function and bile flow."]

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

Key facts at a glance

LOINC
73099-4
Short code
Ursodeoxycholate ind plt IgM SerPl Ql FC
Synonyms
Ursodeoxycholate ind plt IgM SerPl Ql FC
Category
hematology
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
flow-cytometry
CPT
82784
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

Why is this test done?

Your healthcare provider may order this test to check for liver disease, bile duct blockages, or other conditions affecting bile production or flow. It can also help monitor certain treatments for conditions like primary biliary cholangitis.

What does the result mean?

Higher-than-normal levels may suggest issues like liver disease, bile duct obstruction, or certain metabolic disorders. Lower-than-normal levels might indicate problems with bile acid synthesis or absorption.

How is the test performed?

A urine sample is collected, often over a 24-hour period, to measure the total bile acids. The sample is sent to a lab for analysis using a specialized method, such as high-performance liquid chromatography (HPLC).

What should you prepare for the test?

No special preparation is needed unless instructed by your provider. Ensure you follow any dietary or timing guidelines if they are provided, as certain foods or timing of urine collection may affect results.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical significance: Elevated urinary bile acids can indicate conditions like cholestasis (blocked bile flow), liver cirrhosis, or metabolic diseases like Wilson’s disease. They may also be used to monitor bile acid supplements or treatments for bile duct disorders.

Short name

Urinary bile acids

Frequently asked questions

What does a high urinary bile acid level mean?
A high level may signal an obstruction in the bile ducts, liver disease, or other metabolic issues that affect bile production or excretion. Always discuss results with your healthcare provider.
How often should this test be repeated?
Frequency depends on your medical condition and treatment plan. Your provider will determine if repeat testing is needed and how often.
Can diet affect this test?
Yes, certain foods or medications may influence bile acid levels. Follow any specific dietary instructions provided by your healthcare provider to ensure accurate results.
  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