A T-bil blood test, also known as a total bilirubin test, is a type of test that measures the levels of bilirubin in the blood. Bilirubin is a yellowish pigment that is produced by the breakdown of red blood cells and is normally excreted from the body through the liver. High levels of bilirubin in the blood, also known as hyperbilirubinemia, can be a sign of liver damage or disease, such as hepatitis or cirrhosis. This test is commonly ordered when a person has symptoms that may be caused by liver damage or disease, such as yellowing of the skin and eyes, dark urine, and abdominal pain. It can also be used to monitor the effectiveness of treatment for these conditions.
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