A c-reactive protein of 80mg/L indicates an elevated value and is considered to be due to bacterial infection, tissue necrosis, burns, and active rheumatic fever. The normal value of C-reactive protein is <2.87mg/L, and 80mg/L means that it is already much higher than the normal value. It also needs to be analyzed in combination with specific symptoms, medical history and other auxiliary examination results, such as lung infection in addition to elevated C-reactive protein will also have coughing and sputum, smoking history and history of chronic lung disease, chest X-ray or chest CT with imaging indications, blood and so on. C-reactive protein, usually synthesized by the liver, is an acute-phase reactive protein whose main function is to react to inflammation and bacterial infections if it is elevated, and its value is generally proportional to the degree of inflammation or the severity of the infection. However, pregnant women can also have high levels under physiological conditions.