It is possible for a high hepatitis B virus to cause elevated ferritin, but there are many other reasons for elevated ferritin. In patients with hepatitis B, liver damage can occur due to the hepatitis B virus attacking liver cells, and ferritin stored in the liver cell plasma spills into the bloodstream leading to a decrease in liver function, which can then potentially cause increased ferritin. Ferritin is a kind of protein that can store iron, and normal people’s blood contains a small amount of ferritin. Causes of high ferritin include increased synthesis of ferritin and abnormal excretion of ferritin, which can be caused by special state of the body in special period, or triggered by a variety of systemic diseases, such as hepatocellular carcinoma, lung cancer, leukemia and so on. Therefore, when the patient has high ferritin, it is recommended to go to the hospital in time to find out the cause of the disease, and then actively cooperate with the treatment under the guidance of the doctor, so as to avoid delaying the condition.