Jaundice can be measured by means of blood biochemical tests. Jaundice is a relatively common clinical sign, which is caused by an abnormal increase in the concentration of bilirubin contained in the blood serum due to a disorder of bilirubin metabolism, which can lead to signs such as yellow skin, yellow sclera, and may even cause bilirubin encephalopathy. If jaundice occurs, serum bilirubin levels need to be measured to find the cause of the jaundice. A common clinical test for jaundice is the blood biochemistry test, which is a blood test performed by drawing blood from a vein to find out the level of bilirubin in the body and to diagnose jaundice. Jaundice can also be measured percutaneously in newborns with a jaundice meter. Jaundice includes physiological jaundice and pathological jaundice. Physiological jaundice generally does not require special treatment, but if pathological jaundice occurs, it is necessary to cooperate with the doctor to carry out timely interventions to effectively alleviate or eliminate jaundice. If jaundice occurs, one should consult a doctor in time to avoid delay in treatment.