CRP refers to C-reactive protein, and its high level may indicate the presence of infection or non-infectious inflammation in the body, but it is uncertain how much it is dangerously high, and a single value cannot assess the seriousness of the situation. Under normal circumstances, the amount of C-reactive protein in the serum is less than 10mg/L. When the body has respiratory infections, urinary tract infections, digestive system infections, or inflammation caused by surgery or trauma, the patient will have an elevated amount of C-reactive protein. The higher the value, the higher the severity of the infection in general, but how much it is elevated to a dangerous level can not be judged only by this one value, but also need to be combined with blood routine, liver function, kidney function, electrolytes and other laboratory tests to further determine. Therefore, when the C-reactive protein is found to be elevated, patients should actively cooperate with the doctor to carry out examinations to clarify the cause of the disease and carry out targeted treatment.