CB 4.363 μmol/L is not serious and is in the normal range. CB is conjugated bilirubin and the normal range is 0-6.8 μmol/L. It is produced by indirect bilirubin entering the liver and combining with glucuronic acid under the action of hepatic glucuronosyltransferase. Direct bilirubin is soluble in water, reacts directly with azo reagents, and can be excreted in the urine through the kidneys. The liver plays an important role in bilirubin metabolism, including the uptake, binding, and excretion of indirect bilirubin from the blood by hepatocytes. Elevated serum direct bilirubin indicates impaired biliary bilirubin excretion following hepatocellular therapy. Measurement of direct bilirubin helps in the diagnosis and differential diagnosis of jaundice. If you are unsure you can go to a regular hospital for a checkup and judge according to the doctor’s accurate data.