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Total Bilirubin with Control Comparison (Serum)

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

This test measures the total amount of bilirubin in your blood, a waste product from red blood cell breakdown. It helps assess liver function and detect conditions like jaundice or bile duct blockages.

Quick summary

["Bilirubin levels can signal liver or bile issues, including jaundice or gallbladder problems."]

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

Key facts at a glance

LOINC
52132-8
Short code
t(ABL1,BCR)e1a2/control Bld/T
Synonyms
t(ABL1,BCR)e1a2/control Bld/T
Category
coagulation
Sample
whole-blood
Container
Lavender-top (EDTA)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
molgen
Specimen volume
3 mL
Stability
Room temperature: 4h, Refrigerated: 24h
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

Why This Test Matters

Bilirubin is a yellow pigment produced when your body breaks down old red blood cells. High levels can indicate problems with your liver, bile ducts, or red blood cell production. This test helps doctors diagnose conditions like jaundice, liver disease, or hemolytic anemia.

What to Expect Before the Test

No special preparation is needed. You’ll have a small needle inserted into your arm to draw a blood sample. This is quick and usually painless. If you’re nervous, let your healthcare provider know—you can use numbing cream if needed.

What the Results Mean

Results are compared to a control sample to ensure accuracy. Elevated levels may suggest liver or bile issues, while normal results indicate healthy processing of bilirubin. Your doctor will discuss findings with you based on your full medical picture.

Common Conditions Linked to Bilirubin

High bilirubin is often linked to jaundice (yellow skin/eyes), liver diseases (like hepatitis), or blockages in the bile ducts. Low levels may rarely indicate anemia or other blood disorders, but this is less common.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: Bilirubin’s Role in Health

Short name

Total Bilirubin Check

Frequently asked questions

How often will I need this test?
Bilirubin tests are often ordered periodically if you have liver issues, jaundice, or symptoms like fatigue, dark urine, or pale stools. Your doctor will decide based on your health needs and test history.
What if my results are out of the normal range?
If your bilirubin is higher than expected, your doctor may investigate further with additional tests (like liver function panels) or imaging to find the cause. If low, they may check for anemia or other blood disorders.
Can I eat or drink before this test?
You can eat and drink normally before this test, as it’s a simple blood draw. Avoiding alcohol or heavy meals 24 hours before may help if your doctor suggests it for other tests, but not for bilirubin.
  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