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Serum or Plasma Bile Acids (Total)

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

This test measures the total amount of bile acids in your blood, which are important for digestion and liver function.

Quick summary

["Bile acids help break down fats and signal liver health."]

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

Key facts at a glance

LOINC
105156-4
Short code
MR Orbit-Bl
Synonyms
MR Orbit-Bl
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
mr
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 This Test Might Be Ordered

Your healthcare provider may check bile acids if you have symptoms like jaundice (yellowing skin/eyes), unexplained fatigue, or liver-related issues. It can also help diagnose conditions like bile duct blockages or liver disease.

What to Expect Before the Test

No special preparation is usually needed, but you may be asked to fast for 8–12 hours before the draw if your lab requires it. Bring your medical records if you have liver-related conditions.

How the Test Works

A blood sample is taken from a vein, typically in your arm. The sample is sent to a lab to measure total bile acids using a sensitive analytical method.

What the Results Mean

Results are compared to a reference range specific to your lab. High levels may indicate liver disease, bile duct problems, or certain metabolic disorders. Low levels could suggest liver dysfunction or other conditions.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Total Bile Acids

Frequently asked questions

How long does it take to get results?
Results are typically available within 1–3 business days, depending on your lab’s processing time. Follow-up with your provider if you have questions about your results.
What causes high bile acid levels?
High bile acid levels can result from gallbladder disease (e.g., gallstones), liver disease, bile duct blockages, or certain medications. Chronic conditions like cirrhosis or metabolic syndrome may also contribute.
Can diet affect bile acid test results?
Yes, diet can influence bile acid levels. Fasting for 8–12 hours before testing is often recommended to avoid variability from recent meals. Avoid high-fat foods close to your test date if instructed by your provider.
  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