Serum ferritin 1400 is significantly higher than normal and may be associated with liver disease (cirrhosis, etc.), neoplastic disease (lung cancer, etc.), and prolonged blood transfusion (remittance, etc.), etc. Specific analysis is required. Normal adult ferritin normal value: male: 15～200μg/L; female: 12～150μg/L. 1. Liver disease: liver stores iron about 1/3 of the body, and circulating ferritin can be cleared by liver cells, so liver injury can lead to elevated serum ferritin, such as hepatocellular necrosis, chronic liver disease, cirrhosis and other diseases. 2. Malignant tumors: malignant tumors will increase the amount of synthesized ferritin, so ferritin is also used as one of the markers of malignant tumors, such as liver cancer, lung cancer, breast cancer and so on. 3 Long-term blood transfusion: Long-term blood transfusion can cause ferritin elevation in some patients with blood diseases, such as: aplastic anemia, thalassemia and so on. If the examination finds that the ferritin content in the blood is obviously elevated, the patient should immediately consult a doctor to clarify the cause of the disease and take active treatment, so as to avoid the delay of the disease and the danger.