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Bilirubin - urine

Conjugated bilirubin - urine; Direct bilirubin - urine

Bilirubin is a yellowish pigment found in bile, a fluid produced by the liver.

This article is about a lab test to measure the amount of bilirubin in the urine. Large amounts of bilirubin in the body can lead to jaundice.

Bilirubin may also be measured with a blood test.

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Male urinary system

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How the Test is Performed

This test can be done on any urine sample.

For an infant, thoroughly wash the area where urine exits the body.

This procedure may take a few tries. An active baby can move the bag causing urine to go into the diaper.

Check the infant often and change the bag after the infant has urinated into it. Drain the urine from the bag into the container provided by your health care provider.

Deliver the sample to the laboratory or to your provider as soon as possible.

How to Prepare for the Test

Many medicines can interfere with blood test results.

How the Test will Feel

The test involves only normal urination, and there is no discomfort.

Why the Test is Performed

This test may be done to diagnose liver or gallbladder problems.

Normal Results

Bilirubin is not normally found in the urine.

What Abnormal Results Mean

Increased levels of bilirubin in the urine may be due to:

Considerations

Bilirubin can break down in light. That is why babies with jaundice are sometimes placed under blue fluorescent lamps.

Related Information

Bilirubin blood test
Bile
Biliary stricture
Cirrhosis
Gallstones
Biliary system
Hepatitis
Bile duct obstruction
Liver cancer - hepatocellular carcinoma

References

Berk PD, Korenblat KM. Approach to the patient with jaundice or abnormal liver test results In: Goldman L, Schafer AI, eds. Goldman-Cecil Medicine. 25th ed. Philadelphia, PA: Elsevier Saunders; 2016:chap 147.

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Review Date: 5/3/2015  

Reviewed By: Laura J. Martin, MD, MPH, ABIM Board Certified in Internal Medicine and Hospice and Palliative Medicine, Atlanta, GA. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.

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