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Serum/plasma concentration of bile acids (total)

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

This test measures the total amount of bile acids in your blood, which helps assess liver function and bile flow.

Quick summary

["Bile acids support digestion and can reflect liver health or blockages in bile ducts."]

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

Key facts at a glance

LOINC
79615-1
Short code
R-B-AIB SerPl-sCnc
Synonyms
R-B-AIB SerPl-sCnc
Category
chemistry
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

Why Is This Test Done?

Your healthcare provider may order this test if you have symptoms like jaundice (yellowing of skin/eyes), abdominal pain, unexplained fatigue, or if they suspect liver disease, bile duct issues, or gallbladder problems. It can also be part of routine evaluations for certain conditions.

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. Bring any medications or supplements you’re taking, as they could affect results.

How the Test Works

A blood sample is taken from a vein in your arm. The lab analyzes the serum or plasma for total bile acid levels using a sensitive chemical method.

Possible Results and Interpretation

Higher-than-normal levels may indicate liver disease, bile duct blockages, or other conditions affecting bile flow. Lower levels could suggest liver dysfunction or certain metabolic disorders.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Total bile acids

Frequently asked questions

What causes bile acid levels to change?
Changes in bile acid levels can result from liver disease, gallbladder removal, certain medications (e.g., antibiotics, cholesterol drugs), or metabolic conditions like cystic fibrosis.
How long does it take to get results?
Results are typically available within 1–3 business days, depending on lab processing times.
Can diet affect bile acid test results?
Yes, high-fat or high-fiber diets may temporarily influence bile acid levels, so fasting is recommended to avoid interference.
  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