When you have your blood tested, CRP refers to C-reactive protein, which is an acute temporal reactive protein, and its role is mainly to indicate the severity of the systemic inflammatory response. If one’s symptoms are not too severe, C-reactive protein is generally not too high, around 10 μg/L and below 15 μg/L. If this symptom is not too pronounced and the C-reactive protein rises particularly high, it is generally seen in older people, where the perception of symptoms is generally not so pronounced but the associated inflammation can be more intense, in which case it could be pneumonia or other infections. At this point, it is not possible to rule out this possibility of a patient being sicker based solely on symptoms, but rather on a higher CRP. If the patient’s symptoms are more obvious and the CRP is also higher, it means that the two are more compatible. Therefore, the main purpose of the CRP test is to determine the degree of inflammatory response of a person.