Interleukin 6, or interleukin-6, is generally in the range of 0.373 to 0.463 ng/L as a normal value. Interleukin-6 is a cytokine, one of the interleukins. It can be produced by fibroblasts, B-lymphocytes and other cells, and its main role is to enhance the proliferation and action of cells involved in the immune response, and it is an indicator used to determine inflammation and infection. An increase in interleukin-6 indicates the presence of an inflammatory response in the body, and the degree of increase correlates with the degree of the inflammatory response; the more severe the inflammatory response, the more pronounced the increase in interleukin-6. Interleukin-6 greater than 0.463ng/L is commonly associated with bacterial infectious diseases. Normal people have low levels of interleukin-6, and when bacterial infectious diseases occur, such as bacterial pneumonia, bacterial infections of the urinary tract, acute tonsillitis and other diseases, the level of interleukin will be elevated. If the body’s interleukin-6 appears to be elevated, the patient should go to the hospital for relevant examinations and treatment as prescribed by the doctor.