In patients with novel coronavirus, blood C-reactive protein will be elevated after infection.C-reactive protein is mainly an inflammatory marker synthesized by the human liver, or called inflammatory reactant, and after this substance is released from the liver, it often suggests that inflammation is occurring in a certain part of the body, whether it is bacterial or viral infection or non-infectious disease, such as cardiac infarction or gangrene after arterial thrombosis in the extremities, as long as inflammation is occurring in a part of the body, it will have elevated C-reactive protein. If there is inflammation in any part of the body, C-reactive protein will be elevated. In other non-infectious diseases such as rheumatoid, C-reactive protein is also used as an indicator of disease activity. Therefore, in diagnosing this new coronavirus infection, C-reactive protein should not be used as a diagnostic basis, but rather, the level of C-reactive protein should be used to reflect the level of inflammation, which is actually an assessment of the severity of the patient’s condition. C-reactive protein is elevated in patients with coronavirus infection, but is not evidence of a diagnosis of coronavirus infection. Source: Dr. Yurai