A high fucosidase level of 43 u/L may or may not indicate a serious condition, such as the presence of primary liver cancer, hepatitis cirrhosis. Elevated fucoidan may suggest the presence of primary liver cancer, and most patients with cirrhosis and some with hepatitis B may have varying degrees of elevated fucoidan, with decreasing indices after anti-hepatitis treatment. Reduced serum fucosidase activity and increased indices in malignant ovarian tumors should also be noted. Serum fucosidase levels may also be abnormal in diabetic patients. If the fucoidan level is elevated but the elevation is low and close to the normal range, it may be due to an error in the measurement process or some other reason, and the patient’s condition may not be serious. If fucoidan levels are found to be elevated, it is important to go to the hospital and under the guidance of a doctor, undergo other tests to clarify the diagnosis and follow the doctor’s instructions for treatment, so as not to affect your health.