Serum or plasma mass concentration of total bilirubin
This test measures the total amount of bilirubin in your blood, a yellow pigment produced when red blood cells break down. It helps assess liver function and detect conditions like jaundice or bile duct blockages.
["Total bilirubin levels can signal liver or bile system issues."]
Key facts at a glance
- LOINC
- 63560-7
- Short code
- GH 8.5h p chal SerPl-mCnc
- Synonyms
- GH 8.5h p chal SerPl-mCnc
- 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 to check for liver problems, such as hepatitis, cirrhosis, or gallstones, which can affect how bilirubin is processed. It’s also used to monitor conditions like hemolytic anemia (where red blood cells break down too quickly) or to evaluate bile duct blockages that could prevent bilirubin from leaving the body normally.
What to Expect Before the Test
No special preparation is needed, but you may be asked to fast for 8–12 hours before the test if it’s part of a liver function panel. Bring any medications you’re taking, as some (like certain pain relievers) can influence results.
During the Test
A small blood sample will be drawn from a vein, usually in your arm. You may feel a slight pinch, but it’s quick and shouldn’t cause discomfort. If you’re nervous, let your provider know—they can use a tourniquet or distraction techniques.
After the Test
You can return to your normal activities immediately. Apply gentle pressure to the site to stop any bleeding, and check for signs of infection (like redness or swelling) over the next few days. Avoid rubbing the area too hard.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Elevated bilirubin levels often point to liver or bile duct issues, such as jaundice (yellowing of skin/hair), where bilirubin builds up because the liver isn’t processing it properly. Low levels may indicate liver disease or other conditions affecting red blood cell breakdown. Always discuss results with your provider—they’ll interpret them in the context of your overall health.
Short name
Total bilirubin
Frequently asked questions
What causes abnormal bilirubin levels?
How long does it take to get results?
Can diet affect bilirubin test results?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
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.
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