How Much Bilirubin is OK?
Generally, a bilirubin level between 0.3 and 1.0 milligrams per deciliter (mg/dL) is considered normal. However, it's important to remember that the exact "normal" range can vary slightly depending on the laboratory performing the test.
Bilirubin is a yellowish pigment produced during the normal breakdown of red blood cells. Elevated levels can indicate various health problems.
Normal Ranges: A Closer Look
Several sources provide slightly different ranges for normal bilirubin levels:
- 0.2 to 1.3 mg/dL: This range is cited by the Cleveland Clinic and represents an average across multiple labs. https://my.clevelandclinic.org/health/diagnostics/17845-bilirubin
- 0.1 to 1.2 mg/dL: Mount Sinai Hospital uses this range. https://www.mountsinai.org/health-library/tests/bilirubin-blood-test
- Less than 1 mg/dL: The University of Rochester Medical Center considers levels below this value as normal. https://www.urmc.med.rochester.edu/encyclopedia/content.aspx?contenttypeid=167&contentid=total_bilirubin_blood
- 0.3–1.0 mg/dL (Total), 0.1–0.3 mg/dL (Direct), 0.2–0.7 mg/dL (Indirect): Testing.com provides these more specific ranges for total, direct, and indirect bilirubin. https://www.testing.com/tests/bilirubin/
These minor variations highlight the importance of discussing your specific results with your doctor. They will interpret the results within the context of your individual health and medical history.
When Bilirubin is Elevated
Levels above 1.2 mg/dL are generally considered elevated and may warrant further investigation. Levels exceeding 2.5-3 mg/dL can cause jaundice (yellowing of the skin and eyes). https://emedicine.medscape.com/article/2074068-overview
In newborns, jaundice is common, often appearing within the first few days of life. While often harmless (physiological jaundice), high levels necessitate monitoring and sometimes treatment. https://www.healthychildren.org/English/ages-stages/baby/Pages/jaundice.aspx
