Methemoglobin 200μg/L is more serious. Because methemoglobin mostly indicates the chance of cirrhosis and liver cancer, as methemoglobin keeps increasing, it means the higher possibility of liver cancer. In clinical practice, methemoglobin is elevated in about 80% of liver cancer patients, so the value of methemoglobin should be monitored regularly. If it is persistently elevated and abnormal changes in the liver are detected through ultrasound as well as CT examinations, you should go to the hospital or undergo surgery in time to avoid risk factors. In addition, some patients who are not hepatitis B may also have elevated AFP, including women during pregnancy, congenital diseases such as embryonal tumors in the testes and ovaries, etc. They should be carefully distinguished under the guidance of a doctor.