Is indirect bilirubin 18.6 μmol/L serious?

Indirect bilirubin of 18.6 μmol/L is a high indirect bilirubin, which is more serious at this time because its normal value is 0-12 μmol/L, while 18.6 is a high value, which means that the body may be suffering from a related disease.
Indirect bilirubin is bilirubin that is not combined with glucuronic acid, which mainly reflects the metabolic level of red blood cells and the liver, and is elevated in liver diseases and in newborns.
Clinically, elevated indirect bilirubin often indicates liver disease, such as cirrhosis, hepatitis and other diseases, while patients with anemia and hemoglobinopathies, due to underdevelopment of red blood cells, also have elevated indirect bilirubin, but generally indirect bilirubin greater than two times the normal value, it has a strong clinical significance.
But indirect bilirubin at 18.6 μmol / L time indirect bilirubin 18.6 μmol / L belongs to the indirect bilirubin is high, this value at this time is more serious, because of its normal value of 0-12 μmol / L, and 18.6 belongs to the higher value, on behalf of the body may be suffering from the relevant diseases.
However, an indirect bilirubin of 18.6 μmol/L does not mean that the body is suffering from a disease, and other clinical tests are needed to determine whether the symptoms are serious.