Jaundice measuring instruments, namely transcutaneous jaundice tester, can initially screen newborns for jaundice, and generally compliant products put on the market will not cause harm to the body. The probe is gently pressed on the skin of newborns and infants to directly and accurately measure the value of transcutaneous bilirubin and display the concentration of serum bilirubin, measured on the forehead, cheeks and forehead, and then averaged. The level of jaundice varies from stage to stage and it is not possible to determine definitively whether the value is abnormal or not based on the value alone. If the value tends to rise gradually, it is recommended to go to a regular hospital for a blood test in conjunction with the infant’s performance. Jaundice common symptoms 1, basic symptoms: skin, sclera yellow staining, itching and even urine, tears and sweat yellow staining, often with abdominal distension, abdominal pain, nausea, vomiting, diarrhea or constipation symptoms; 2, abdominal symptoms: such as liver occupational lesions, the presence of large amounts of ascites, the abdomen is froggy abdomen, umbilical protrusion, such as liver abscess, the local skin can appear red, swollen, pressure pain and other inflammatory reactions; 3, accompanying symptoms: such as acute cholangitis , liver abscess, may be accompanied by fever, such as bile duct stones, may appear severe pain in the epigastrium. Caution: Transcutaneous jaundice tester is only an auxiliary tool to help detect jaundice, and the need to purchase and use it should be evaluated in conjunction with a doctor’s recommendation. Physiological jaundice in newborns is a normal physiological phenomenon and usually subsides in 7-10 days in full-term infants without special treatment, while pathological jaundice generally requires medical treatment as prescribed by the doctor.