Gilbert syndrome is also known as congenital non-hemolytic jaundice. Differential diagnosis of Gilbert syndrome includes serum bilirubin test, liver function test, genetic test and so on. 1. Serum bilirubin test: patients with Gilbert’s syndrome will have abnormal bilirubin conversion, resulting in elevated indirect bilirubin, which leads to elevated total bilirubin, but the patients will not have obvious physical symptoms, so the bilirubin can be checked several times in order to determine whether they are suffering from Gilbert’s syndrome. 2. Liver function test: If the patient experiences discomfort and fatigue in the liver area, as well as frequent yellowing of the skin and eyes, jaundice may be caused by liver damage due to the elevation of indirect bilirubin by Gilbert’s syndrome, thus Gilbert’s syndrome can be diagnosed by liver function test. 3. Genetic test: Gilbert’s syndrome is an autosomal dominant disease, but its dominant rate is not complete, usually at 16%-50%. If someone in the family has Gilbert’s syndrome, it is recommended to go to the hospital for a genetic test to identify and diagnose whether you have the disease. If you suspect that you have Gilbert syndrome, it is recommended that you go to the hospital for a detailed examination to determine whether you have the disease, and under the guidance of the doctor for symptomatic treatment.