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Bilirubin, Urine — Qualitative, Automated Strip Test

Published: August 9, 2026Updated: August 16, 2026

This test checks urine for bilirubin using a reagent strip and automated analyzer. It is commonly part of a urinalysis.

Quick summary

["A positive urine bilirubin result may suggest that bile is entering the bloodstream or that bile flow is obstructed."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
50551-1
Short code
Bilirub Ur Ql Strip.auto
Synonyms
Bilirub Ur Ql Strip.auto
Category
liver
Sample
urine
Container
Sterile urine container
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
test-strip-automated
Specimen volume
10 mL
Stability
Room temperature: 2h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

What is this test?

This is a qualitative urinalysis test that checks whether bilirubin is present in your urine. An automated analyzer reads the color change on a reagent strip and reports the result.

Why might I need this test?

Urine bilirubin may be checked as part of a routine urinalysis or when a clinician is evaluating possible liver disease, gallbladder disease, or a blocked bile duct.

How is the test performed?

A urine sample is tested with a bilirubin reagent strip, and the strip is placed in an automated urinalysis analyzer. The analyzer evaluates the strip's color reaction and provides a qualitative result.

How do I prepare for the test?

Follow your clinician's instructions for collecting urine, often using a clean-catch midstream sample. Tell the laboratory if you are pregnant, taking medications, or have recently received antibiotics or other medicines that may affect urine tests.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Bilirubin is normally not detectable in urine. A positive result may occur when bile flow is obstructed, as in a blocked bile duct, or when liver disease allows bilirubin to enter the bloodstream and spill into the urine. Mild or temporary changes can also occur, so the result should be interpreted with other liver tests and your symptoms.

Short name

Urine bilirubin test

Frequently asked questions

Does a positive urine bilirubin test mean I have liver disease?
No. It does not diagnose liver disease by itself. The result may reflect liver inflammation, impaired bile flow, or a bile duct blockage and should be reviewed with other laboratory findings.
Is fasting required for this test?
Fasting is usually not required. Prepare and collect the urine according to the instructions provided by your clinician or laboratory.
Can medications or other conditions affect the result?
Yes. Certain medicines, urinary tract conditions, and interference from other substances in the urine can affect strip-test results. Tell your clinician about medications and recent health changes.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy