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.
Conjugated bilirubin - urine; Direct bilirubin - urine
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 urine 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 help diagnose liver or gallbladder problems.
Bilirubin is not normally found in the urine.
What Abnormal Results Mean
Increased levels of bilirubin in the urine may be due to:
Bilirubin can break down in light. That is why babies with jaundice are sometimes placed under blue fluorescent lamps.
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.
Dean AJ, Lee DC. Bedside laboratory and microbiologic procedures. In: Roberts JR, Custalow CB, Thomsen TW, eds. Roberts and Hedges' Clinical Procedures in Emergency Medicine and Acute Care. 7th ed. Philadelphia, PA: Elsevier; 2019:chap 67.
Riley RS, McPherson RA. Basic examination of urine. In: McPherson RA, Pincus MR, eds. Henry's Clinical Diagnosis and Management by Laboratory Methods. 23rd ed. St Louis, MO: Elsevier; 2017:chap 28.
Review Date: 5/6/2019
Reviewed By: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.
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