Interpret Your Total Bilirubin Results
Enter your Total Bili value below and get an instant, free AI interpretation — a plain-English explanation checked against WHO/IFCC reference ranges.
Medical Disclaimer
This AI-generated interpretation is for educational purposes only and does not constitute medical advice, diagnosis, or treatment. Results may vary based on individual health factors not captured here.
Always consult a qualified healthcare professional before making any health decisions. Read full disclaimer →
Total Bilirubin Normal Ranges
Bilirubin is the breakdown product of heme from red blood cells.
| Age Group | Reference Range | Unit | Notes |
|---|---|---|---|
| Adults (18–64) | 0.2 – 1.2 | mg/dL | — |
Also reported in: µmol/L.Conversion factor: 1 µmol/L = 17.094 mg/dL.
Critical (Panic) Values
Critical High: > 20 mg/dL. Values outside these limits require immediate clinical attention.
Why Doctors Order the Total Bilirubin Test
The pattern of bilirubin elevation (direct vs. indirect) localizes the cause. Predominantly indirect hyperbilirubinemia suggests hemolysis or Gilbert's syndrome.
How to Enter Your Total Bili Result
Total Bilirubin can be reported in mg/dL or µmol/L. Choose the unit printed next to your result on the lab report so it is compared with the matching reference range.
What a Low or High Total Bili Can Be Associated With
Below the reference range
- Not clinically significant (low bilirubin is normal)
Above the reference range
- Hepatocellular disease: viral hepatitis, alcoholic hepatitis, cirrhosis
- Cholestasis: bile duct stones, cholangitis, drug-induced cholestasis
- Hemolysis: sickle cell disease, G6PD deficiency, immune hemolytic anemia
- Gilbert's syndrome (benign unconjugated hyperbilirubinemia)
- Neonatal jaundice
This interpreter flags a result at or above 20 mg/dL as a critical value. Results that extreme are uncommon — contact your doctor promptly, and seek urgent medical care if you feel unwell.
These are common associations, not a diagnosis. A single result is read alongside your symptoms, history and other tests — discuss it with your doctor.
What Can Change Your Total Bili Result
Before you read too much into a result, consider whether any of these applied:
- Light exposure (degrades bilirubin — sample must be protected)
- Lipemia (interferes with spectrophotometric measurement)
- Hemolysis of sample (releases hemoglobin, interfering with bilirubin measurement)
- Fasting (raises unconjugated bilirubin in Gilbert's syndrome)
Preparing for the test: Fasting for 4 hours preferred. Avoid prolonged sunlight exposure of the sample (light degrades bilirubin).
Symptoms That Often Prompt Total Bili Testing
- Jaundice (yellowing of skin, sclera, mucous membranes)
- Dark (tea-colored) urine
- Pale or clay-colored stools
- Itching (pruritus)
- Fatigue
Want the full clinical guide to Total Bilirubin?
Reference ranges, causes, symptoms, preparation, and FAQs.