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Bilirubin (Total)

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

This test measures the total amount of bilirubin in your blood. Bilirubin is a yellow pigment produced when your body breaks down old red blood cells.

Quick summary

["Bilirubin helps your liver process waste and keeps your blood healthy."]

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

Key facts at a glance

LOINC
44170-9
Short code
Deprecated US Liver Bx needle guide
Synonyms
Deprecated US Liver Bx needle guide
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
us
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 a total bilirubin test to check for liver problems, such as hepatitis, bile duct blockages, or other conditions that affect how your liver processes bilirubin. It can also help diagnose conditions like jaundice, where the skin or eyes turn yellow due to high bilirubin levels.

What does the test involve?

A small sample of blood is taken from a vein in your arm. The blood is then sent to a lab where it is analyzed to measure bilirubin levels. No special preparation is usually needed, but you may be asked to avoid certain medications or foods that could affect results.

What do the results mean?

Results can vary depending on your health and other factors. High bilirubin levels may indicate liver or bile duct problems, while low levels might suggest certain blood disorders or liver diseases. Your healthcare provider will discuss the results with you in detail.

What are common causes of abnormal results?

Elevated bilirubin can be caused by liver diseases (like cirrhosis or hepatitis), blockages in the bile ducts, hemolytic anemia (where red blood cells break down too quickly), or certain medications. Low bilirubin levels can sometimes be linked to liver disease or other conditions affecting bilirubin metabolism.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Total Bilirubin

Frequently asked questions

How often should I get this test?
Your doctor will determine how often you need this test based on your medical history, symptoms, and overall health. Regular monitoring may be recommended if you have liver disease or other conditions that affect bilirubin levels.
What should I do if my bilirubin test results are abnormal?
If your results are higher than expected, your healthcare provider may recommend further tests or treatments to manage the underlying cause. Follow their advice closely and report any new symptoms like jaundice, fatigue, or abdominal pain.
Can diet or lifestyle changes affect bilirubin levels?
Dietary changes alone won’t change bilirubin levels, but avoiding alcohol, certain medications, and managing conditions like hemolytic anemia can help. Always discuss any changes with your doctor before making them, especially if you have liver issues.
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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