What is the difference between direct and indirect bilirubin?

Updated: Jul 31, 2019
  • Author: Richard A Weisiger, MD, PhD; Chief Editor: BS Anand, MD  more...
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Although the directly reacting bilirubin concentration approximates the conjugated bilirubin concentration in most cases, the 2 terms do not mean the same thing. Similarly, indirect bilirubin is not the same as unconjugated bilirubin.

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