<Tr> <Td> total bilirubin </Td> <Td> <21 </Td> <Td> <1.23 </Td> </Tr> <Tr> <Td> direct bilirubin </Td> <Td> 1.0--5.1 </Td> <Td> 0--0.3, 0.1--0.3, 0.1--0.4 </Td> </Tr> <P> Hyperbilirubinemia is a higher - than - normal level of bilirubin in the blood . For adults, this is any level above 170 μmol / l and for newborns 340 μmol / l and critical hyperbilirubinemia 425 μmol / l . </P> <P> Mild rises in bilirubin may be caused by: </P>

What is the normal value of serum bilirubin
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