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Male urinary system
Male urinary system


Definition:

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

This article discusses the laboratory 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. For information on that test, see: Bilirubin - blood



Alternative Names:

Conjugated bilirubin - urine; Direct bilirubin - urine



How the test is performed:

A 24-hour urine sample is needed.

  • On day 1, urinate into the toilet when you get up in the morning.
  • Afterwards, collect all urine in a special container for the next 24 hours.
  • On day 2, urinate into the container when you get up in the morning.
  • Cap the container. Keep it in the refrigerator or a cool place during the collection period.

Label the container with your name, the date, the time of completion, and return it as instructed.

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

  • Open a urine collection bag (a plastic bag with an adhesive paper on one end).
  • For males, place the entire penis in the bag and attach the adhesive to the skin.
  • For females, place the bag over the labia.
  • Diaper as usual over the secured bag.

This procedure may take a couple of attempts -- lively infants can move the bag, causing the urine to be absorbed by the diaper. You may need extra collection bags.

Check the infant frequently 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 it to the laboratory or your health care provider as soon as possible upon completion.



How to prepare for the test:

Your health care provider may tell you to stop taking any drugs that may interfere with the test.

Drugs than can increase the level of bilirubin include:

  • Allopurinol
  • Barbiturates
  • Birth control pills
  • Certain antibiotics
  • Chlorpromazine
  • Diuretics
  • Phenazopyridine
  • Steroids
  • Sulfonamides

Drugs that can cause reduce the level of bilirubin include indomethacin and ascorbic acid.



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 Values:

Bilirubin is not normally found in the urine.



What abnormal results mean:

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



What the risks are:

There are no risks.



Special considerations:

Bilirubin can breakdown in the presence of light. That's why babies with jaundice are sometimes placed under blue fluorescent lamps. See: Bili lights



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.




Review Date: 5/2/2009
Reviewed By: 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.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
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