How Much Bilirubin is Good?
A healthy bilirubin level generally falls within a specific range, varying slightly depending on the laboratory and the individual's age. For adults and children, a total bilirubin level between 0.2 and 1.3 mg/dL (1.71 to 20.5 µmol/L) is typically considered normal. However, normal ranges can vary slightly between laboratories.
Bilirubin is a yellowish substance produced during the body's natural breakdown of red blood cells. Elevated levels, exceeding 2.5-3 mg/dL, can cause jaundice (yellowing of the skin and eyes). Conversely, very low levels might indicate other underlying medical conditions.
Normal Ranges: A Closer Look
- Adults and Children (Most Sources): Less than 1 mg/dL (or less than 1.2 mg/dL depending on the lab) is considered normal.
- Newborns: Normal bilirubin levels can be significantly higher in newborns, reaching as high as 12 mg/dL in some cases. This is due to the natural process of red blood cell breakdown post-birth and usually resolves itself. Specific ranges will depend on the age of the newborn.
- Conjugated (Direct) Bilirubin: A normal range for this type of bilirubin is generally less than 0.3 mg/dL.
Importance of Lab Values and Individual Variation
It is crucial to remember that these ranges are guidelines. Your individual results should be interpreted by a healthcare professional who considers your specific health history and other factors. Slight variations from the "normal" range may not always indicate a problem.
When to Consult a Doctor
If your bilirubin levels are outside the normal range, or if you experience symptoms like jaundice, fatigue, or dark urine, consult your physician. They can determine the cause of the abnormal levels and recommend appropriate treatment or further investigation.
