What is the routine CRP test?
Aug 21, 2025
Source: Cainiu Health
Dr. Liu Feng
Introduction
CRP (C-reactive protein) rises significantly within a short period during bacterial infections, acute inflammatory episodes, or physical trauma, and the degree of elevation correlates with the severity of the inflammation. For example, in bacterial infections such as pneumonia and appendicitis, CRP levels often increase markedly, aiding physicians in rapidly determining the type of infection and assessing disease progression. If abnormalities are detected, prompt medical attention is recommended.
Under normal circumstances, routine CRP (C-reactive protein) testing is a medical examination used to detect the level of C-reactive protein in the blood, primarily assisting in determining whether there is infection, inflammation, or tissue damage within the body. If abnormal results are found, timely medical consultation is recommended. Detailed analysis is as follows:
During bacterial infections, acute inflammatory episodes, or physical trauma, CRP levels will significantly increase within a short time, and the degree of elevation correlates with the severity of the inflammation. For example, in bacterial infections such as pneumonia or appendicitis, CRP levels often rise, helping doctors rapidly determine the type of infection and assess disease progression.
In contrast, during viral infections, CRP levels typically only slightly increase or remain within the normal range. This characteristic can be used to differentiate types of infection. Additionally, in chronic inflammatory conditions such as rheumatoid arthritis, CRP may show a持续轻度升高 (persistent mild elevation), and monitoring its changes can reflect disease activity and assist in evaluating treatment effectiveness.
Results of routine CRP testing should be interpreted in combination with clinical symptoms and other diagnostic tests; a single result alone cannot serve as the basis for a definitive diagnosis. If abnormal values are detected, further investigations should be conducted under a doctor's guidance to identify the underlying cause before targeted treatment is initiated.
