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Also known as: Total Bilirubin; TBIL; Neonatal Bilirubin; Direct Bilirubin; Conjugated Bilirubin; Indirect Bilirubin; Unconjugated Bilirubin
Formal name: Bilirubin - blood

At a Glance

Why Get Tested?

To screen for or monitor liver disorders or hemolytic anemia; to monitor neonatal jaundice

When to Get Tested?

When you have signs or symptoms of liver damage, liver disease, bile duct blockage, hemolytic anemia, or a liver-related metabolic problem, or if a newborn has jaundice

Sample Required?

In adults, a blood sample drawn from a vein in the arm; in newborns, a blood sample from a heelstick; non-invasive technology is available in some healthcare facilities that will measure bilirubin by using an instrument placed on the skin (transcutaneous bilirubin meter)

Test Preparation Needed?

You may need to fast (nothing but water) for several hours before the test; fasting requirements vary by laboratory; ask your lab or healthcare provider for instructions.