Indirect bilirubin of 30 μmol/L is elevated, and its severity is related to the specific cause and extent of the disease, and a single elevated value cannot be judged. Indirect bilirubin is normally metabolized from hemoglobin released by the breakdown of senescent red blood cells in the peripheral blood, and is usually transported to the liver to form direct bilirubin, which is partly reabsorbed through the intestinal and hepatic circulations, and partly excreted in the feces. Indirect bilirubin can be elevated as a result of poor diet, alcohol consumption, or late nights, but it is usually not serious and can be observed periodically. If the elevated indirect bilirubin is associated with blood diseases (e.g., hemolytic anemia, hypersplenism) or liver diseases (e.g., acute jaundice hepatitis, acute hepatic necrosis, cirrhosis), the condition is more serious and requires targeted treatment. When indirect bilirubin is elevated, it is recommended to consult a doctor in time to identify the cause and standardize the treatment under the doctor’s guidance to avoid delaying the condition.