c-reactive protein below 0.5g/L is in the normal range. c-reactive protein is an acute time-phase reactive protein, which cannot be ruled out due to non-bacterial infections, functional diseases and other reasons.
1. Non-bacterial infections: If the patient’s clinical manifestations suggest inflammation, checking the c-reactive protein can help distinguish bacterial infections from non-bacterial infections. Generally, bacterial infections will lead to elevated c-reactive protein, and c-reactive protein lower than 0.5g/L may indicate inflammation due to non-bacterial infections, which can be treated with non-steroidal anti-inflammatory drugs, such as diclofenac sodium.
2. Functional diseases: c-reactive protein can also distinguish between functional diseases and organic diseases, generally organic diseases will lead to elevated c-reactive protein. Therefore, clinical c-reactive protein below 0.5g/L may also indicate a functional disease rather than an organic disease. The c-reactive protein needs to be combined with the actual clinical condition of the patient and other tests to make a comprehensive judgment. Doctor’s help should be sought in a timely manner.