Urobilinogen in Urine: Normal Range & High or Low Results
Also known as: Urine urobilinogen, Urobilinogen urine test, Urobilinogen UA, Urobilinogen dipstick
Urobilinogen is formed in the intestine from bilirubin, and a small amount normally returns to the blood and appears in urine. A commonly reported urine range is about 0.1–1.0 mg/dL, although methods and reference ranges vary by lab. High results may occur with increased red-cell breakdown or liver dysfunction, while very low or absent results may occur with blocked bile flow, but this dipstick finding is neither sensitive nor specific and must be interpreted by a clinician with blood tests and symptoms.
Urine Urobilinogen normal range
| Category | Range (mg/dL or Ehrlich units/dL (method dependent)) |
|---|---|
| Typical expected range | 0.1–1.0 mg/dLSome reports use a different interval or Ehrlich units; use your lab’s method and reference range |
| High | > 1.0 mg/dL or flagged highMay reflect liver dysfunction or increased red-blood-cell breakdown; not diagnostic by itself |
| Low or absent | 0 / not detected / flagged lowMay occur with reduced bile reaching the intestine, but dipstick limitations and specimen factors can also affect the result |
Reference ranges vary by laboratory. Use the range printed on your own report as the definitive comparison.
What high Urine Urobilinogen can mean
- Increased red-blood-cell breakdown (hemolysis), which produces more bilirubin for intestinal conversion to urobilinogen
- Hepatocellular dysfunction, such as hepatitis, that can reduce the liver’s ability to clear reabsorbed urobilinogen
- A high result is nonspecific and does not establish hemolysis or liver disease without confirmatory blood testing
- Urine urobilinogen testing has limited sensitivity and specificity, so a normal or abnormal dipstick result cannot reliably rule liver or blood disorders in or out
What low Urine Urobilinogen can mean
- Very low or absent urobilinogen may occur when little bile reaches the intestine, including complete biliary obstruction
- A low result can also reflect test or specimen limitations and is not reliable enough to diagnose blocked bile flow on its own
- Unlike urine bilirubin, a small amount of urine urobilinogen is normally expected
What to do about an abnormal result
- Compare the result with the reference range and units on your own report, because dipstick scales and methods vary by lab.
- Discuss a clearly high, absent, or repeatedly abnormal result with a clinician, who may correlate it with urine bilirubin, a complete blood count, reticulocyte count, bilirubin fractions, ALT, AST, alkaline phosphatase, LDH, and haptoglobin as appropriate.
- Do not use urine urobilinogen alone to diagnose liver disease, bile-duct obstruction, or hemolysis; the test is neither sensitive nor specific for those conditions.
- Seek prompt medical evaluation for new yellow skin or eyes, very dark urine, pale stools, significant right-upper-abdominal pain, fainting, shortness of breath, or marked weakness.
Understand your own results
Vero reads your uploaded labs and explains what your specific numbers mean — in the context of your health history, medications, and goals. Not generic ranges. Yours.
Download Vero on the App StoreFree to download. No credit card required.
Frequently asked questions
What is a normal urobilinogen level in urine?
A commonly reported urine urobilinogen range is about 0.1–1.0 mg/dL, and a small amount is normal. Some dipsticks use different scales or Ehrlich units, so compare your result with the reference range printed by the laboratory that performed the test.
What does high urobilinogen in urine mean?
High urine urobilinogen may occur when red blood cells are breaking down faster than usual or when the liver is not clearing reabsorbed urobilinogen normally. Because the dipstick is nonspecific, clinicians confirm the cause with symptoms and blood tests rather than diagnosing hemolysis or liver disease from this result alone.
What does low or absent urobilinogen in urine mean?
Very low or absent urine urobilinogen may occur when bile is not reaching the intestine, including with complete bile-duct obstruction. However, specimen and test limitations can also produce a low result, so it cannot confirm obstruction without liver blood tests and, when indicated, imaging.
Can a normal urine urobilinogen result rule out liver disease?
No. Urine urobilinogen is neither sensitive nor specific enough to rule liver disease in or out. Clinicians rely more heavily on the clinical picture and blood tests such as ALT, AST, alkaline phosphatase, and bilirubin.
Related biomarkers
Sources
This page draws on the following authoritative references.
- Example Urinalysis Sample Report With Notes — Testing.com
- Urinalysis (UA) Test: What It Checks and Why — Testing.com
- Laboratory Tests of the Liver and Gallbladder — Merck Manual Professional Edition
- Overview of Hemolytic Anemia — Merck Manual Professional Edition
- Urinalysis — Clinical Methods (NCBI Bookshelf)
Medically reviewed by Antonieta Rueda, MD and Kyle R. Toth, MD · Last reviewed August 1, 2026
This article is for informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition or your lab results.