Total bilirubin of 42.7 umol/L is mildly elevated, which is a mild form of jaundice, but the severity of the disease needs to be judged based on the disease itself, other indicators of liver function and imaging tests. Total bilirubin is the sum of direct bilirubin and indirect bilirubin, which is one of the tests for liver and biliary function, and the severity of jaundice can be determined according to the elevation of total bilirubin, and the normal value of total bilirubin is from 1.71umol/L to 17.1umol/L. When the total bilirubin is 34.2umol/L, it is considered to be mildly elevated. When the total bilirubin is 34.2～171umol/L, it is mild jaundice, which is usually seen in hemolytic or hepatocellular jaundice. 42.7umol/L belongs to mild jaundice, which is not very serious. It is usually seen in hemolytic or hepatocellular jaundice. 171-342umol/L is moderate jaundice, usually seen in hepatocellular or obstructive jaundice. Severe jaundice occurs when the total bilirubin is greater than 342umol/L. It is usually seen in complete obstructive jaundice. Elevated total bilirubin can be physiological or pathological, physiological will be reduced by itself, but the total bilirubin of 42.7umol/L is out of the normal range, you should go to the hospital in time to diagnose the cause of the disease, so as not to delay the condition.