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Bilirubin - blood - Results

Alternative Names

Total bilirubin - blood; Unconjugated bilirubin - blood; Indirect bilirubin - blood; Conjugated bilirubin - blood; Direct bilirubin - blood

Normal Values:

It is normal to have some bilirubin in your blood. Normal levels are:

  • Direct (also called conjugated) bilirubin: 0 to 0.3 mg/dL
  • Total bilirubin: 0.3 to 1.9 mg/dL

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.

What abnormal results mean:

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:

  • How fast the level has been rising
  • Whether the baby was born early
  • How old the baby is

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:

  • Reviewed last on: 2/20/2011
  • David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

References

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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