Serum or plasma concentration of total bilirubin

Why is this test done?

Your doctor may order a total bilirubin test to check for liver problems, such as hepatitis, cirrhosis, or gallbladder issues. It can also help diagnose conditions like hemolytic anemia, where red blood cells break down faster than usual. Sometimes, it’s used to monitor treatment progress or check for bile duct blockages.

What does a result mean?

Bilirubin is usually processed by the liver and excreted in urine or bile. High levels may indicate liver disease, bile duct problems, or red blood cell disorders. Low levels might suggest liver disease or certain genetic conditions. Your doctor will interpret results in the context of your overall health and symptoms.

How is the test performed?

A blood sample is taken from a vein, usually in your arm. The sample is sent to a lab, where bilirubin levels are measured using a specialized test that detects its presence in the blood.

What can affect results?

Several factors can influence bilirubin levels, including diet (e.g., high intake of certain foods or supplements), medications (like certain antibiotics or painkillers), dehydration, or recent blood transfusions. Illnesses like infections or severe stress can also temporarily raise levels.