COMPENDIUM ON FUNCTIONAL MEDICINE - Flipbook - Page 241
Bilirubin
Bilirubin is a waste product formed from the breakdown of red
blood cells. Unconjugated (indirect) bilirubin is transported to the
liver, where it's converted into conjugated (direct) bilirubin. This
processed form is then mixed with bile and eliminated through the
stool. Elevated bilirubin levels can indicate liver dysfunction or
impaired bile flow.
Range
Units
Conventional
0.1 - 1.3 mg/dL
Optimal / Functional
0.1 - 1.2 mg/dL
Alarm
> 2.6 mg/dL
Direct and Indirect Bilirubin
Differentiating between direct and indirect bilirubin levels provides
important insight into the root cause of bilirubin elevation. Direct
(conjugated) bilirubin can indicate liver health and function in
relation to RBC recycling and bile production. Indirect
(unconjugated) bilirubin can help distinguish between liver and
hemolytic disorders.
Direct Bilirubin - Conjugated
Range
Units
Conventional
0 - 0.0 mg/dL
Optimal / Functional
0.2 - 1.2 mg/dL
Alarm
> 13.7 mg/dL
Indirect Bilirubin - Unconjugated
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