Urobilinogen is made in the gut from bilirubin, and a small amount normally appears in urine.
- Normal range (adults)
- 0.1–1 mg/dL (1.69–16.9 µmol/L)
- Sample
- Urine
- Fasting
- Not usually needed
- Also called
- Urine Urobilinogen, UBG, URO, Urobilinogen Urine
Urobilinogen normal range
| Group | mg/dLConventional units: US, South Asia | µmol/LSI units: UK, Europe, Australia, international |
|---|---|---|
| Adults | 0.1–1 | 1.69–16.9 |
Your report may use either unit system; labs in the Gulf often print both. Ranges also vary slightly between laboratories, so the range printed on your own report is the one to go by.
Why is the Urobilinogen test done?
It is part of the routine urine dipstick and helps assess liver function and red-cell breakdown.
What does a high Urobilinogen level mean?
High urobilinogen can point to liver disease or increased breakdown of red blood cells.
Common causes
- Hepatitis or other liver disease
- Hemolytic anemia
- Some medicines
Diet and lifestyle tips
- Avoid alcohol
- Stay hydrated
What does a low Urobilinogen level mean?
Very low or absent urobilinogen may suggest blocked bile flow.
Common causes
- Bile duct blockage
- Antibiotics that change gut bacteria
Diet and lifestyle tips
- No specific diet; see a doctor
When should you see a doctor?
Abnormal urobilinogen should be checked with liver blood tests and a blood count.
Last updated
This page is for general education and is not a diagnosis. Normal ranges differ between laboratories, so always compare your result with the reference range printed on your own report, and discuss abnormal results with your doctor.