Serum or plasma concentration of total bilirubin

Why is this test done?

Your doctor may order a total bilirubin test to check for liver disease, such as hepatitis, cirrhosis, or blockages in the bile ducts. It can also help identify conditions like hemolytic anemia, where red blood cells break down too quickly, or gallstones that may be blocking bile flow.

What does the test involve?

A small blood sample is taken from a vein in your arm. The blood is sent to a lab where it is analyzed to determine the total bilirubin concentration. No special preparation is usually needed, but you may be asked to avoid certain medications or foods for a short time before testing.

What are the results typically used for?

Results help identify abnormal bilirubin levels, which can indicate underlying health issues. High levels may suggest liver problems, while low levels are less common but can sometimes be linked to certain genetic conditions or liver diseases.

What might abnormal results mean?

Elevated bilirubin levels can signal conditions like jaundice (yellowing of the skin and eyes), liver disease, or bile duct obstructions. Low levels are less frequently significant but may warrant further investigation to rule out rare conditions.