Direct bilirubin 5.7 umol/L is in the normal range. Direct bilirubin is a form of bilirubin, also known as conjugated bilirubin, which is a product of the decomposition and destruction of senescent red blood cells in the blood circulation. Direct bilirubin is indirect bilirubin into the liver, combined with glucuronic acid to produce the substance, water-soluble can be excreted from the biliary tract, but also can be excreted from the kidneys. The normal reference range of direct bilirubin is 0~6.8umol/L, so direct bilirubin 5.7umol/L is in the normal range; elevated values often indicate obstructive jaundice, cholelithiasis and other diseases. The results of auxiliary tests need to be analyzed and diagnosed by the physician according to the patient’s condition, do not interpret on your own to avoid delaying the condition.