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Total bilirubin - blood; Unconjugated bilirubin - blood; Indirect bilirubin - blood; Conjugated bilirubin - blood; Direct bilirubin - blood
It is normal to have some bilirubin in your blood. Normal levels are:
Note: mg/dL = milligrams per deciliter
Normal value ranges may vary slightly among different laboratories. Talk to your doctor about the meaning of your specific test results.
The examples above show the common measurements for results for these tests. Some laboratories use different measurements or may test different specimens.
In newborns, bilirubin levels are higher for the first few days of life. Your child's doctor must consider the following when deciding whether your baby's bilirubin levels are too high:
Jaundice can also occur when more red blood cells than normal are broken down. This can be caused by:
The following liver problems may also cause jaundice or high bilirubin levels:
The following problems with gallbladder or bile ducts may cause higher bilirubin levels:
Berk PD, Korenblat KM. Approach to the patient with jaundice or abnormal liver test results. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 150.
Pratt DS. Liver chemistry and function tests. In: Feldman M, Friedman LS, Brandt LJ, eds. Sleisenger and Fordtran's Gastrointestinal and Liver Disease. 9th ed. Philadelphia, Pa: Saunders Elsevier;2010:chap 73.
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