The normal level of fibrinogen in the body is 2-4 g/L. Clinically, there are more methods of fibrinogen measurement, usually using colorimetric method for measurement, the normal value of 2-4g/L, belongs to the more important indicators in the hemagglutination analysis. However, if sepsis, malignant tumors, pathogenic infections, cardiovascular and cerebrovascular infarction, atherosclerosis and other diseases occur, there may be elevated fibrinogen. In addition, low levels of fibrinogen may also occur in the case of diseases such as congenital fibrinogen deficiency, severe malnutrition, and anorexia nervosa. If you find low fibrinogen or elevated fibrinogen during the examination, promptly go to the hospital for consultation, clarify the cause of the disease and then carry out appropriate treatment and therapy under the guidance of the doctor.