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Bilirubin

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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

When to Get Tested?

If your doctor thinks that you have signs or symptoms of liver damage, liver disease, bile duct blockage, hemolytic anemia, or a liver-related metabolic problem; 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 health care facilities that will measure bilirubin by using an instrument placed on the skin (transcutaneous bilirubin meter)

Test Preparation Needed?

Fasting requirements vary by laboratory; ask your lab or health care provider for instructions.