Start free

Bilirubin blood test

A yellow pigment made when old red blood cells are broken down, cleared by the liver.

Typical range (adult men)
0.1–1.2 mg/dL
Panel
Liver Function
Also called
Total bilirubin

Reference ranges vary between labs; use the range on your own report. Results need to be read by a doctor alongside your symptoms and other tests.

Why it’s tested

Rises when the liver or bile ducts are struggling, and with harmless Gilbert syndrome.

What can raise it

  • Gilbert syndrome (common and harmless)
  • Liver strain or bile flow problems, including from oral anabolic steroids
  • Breakdown of red blood cells

What can lower it

  • Usually not a concern

Getting an accurate result

Compounds that affect Bilirubin

Monitored with these, based on their known properties:

Other liver function tests

Questions

What is a normal Bilirubin level?

A typical adult male reference range is 0.1–1.2 mg/dL. Ranges differ for women, by age and between labs, so compare with the range printed on your report.

What does high Bilirubin mean?

Common reasons include gilbert syndrome (common and harmless), liver strain or bile flow problems, including from oral anabolic steroids and breakdown of red blood cells. One result outside the range isn't a diagnosis: a doctor will look at it with your other markers and history.

What does low Bilirubin mean?

Common reasons include usually not a concern.