What does a complete blood count CRP mean?

Aug 20, 2025 Source: Cainiu Health

Dr. Liu Feng

Introduction

CRP stands for C-reactive protein. The C-reactive protein test in a complete blood count (CBC) is an indicator used to measure the level of C-reactive protein in the blood. Detailed analysis is as follows: No special fasting is required before this test; normal eating is acceptable. However, strenuous exercise and staying up late should be avoided prior to the test to prevent affecting the accuracy of the results.

C-reactive protein is a protein produced by the liver. When the body is in a healthy state, its level in the blood is very low; however, when the body experiences bacterial infections, tissue damage, or chronic inflammation, the production of this protein rapidly increases, causing its level to rise. This indicator is often used together with other indicators in the complete blood count, such as white blood cell count, to help doctors determine the type of infection. CRP levels typically rise significantly during bacterial infections but may not increase markedly during viral infections. It is also used to assess the severity of inflammation and the effectiveness of treatment, serving as an important reference in the diagnosis and management of various conditions such as colds, pneumonia, trauma, and rheumatic diseases.

Before undergoing this test, there is no need to fast; normal eating is fine. However, strenuous exercise and staying up late should be avoided before the test to prevent affecting the accuracy of results. After blood collection, press the puncture site for several minutes until bleeding stops, and do not rub it. Once results are obtained, do not rely solely on this single indicator to determine the condition. It is important to combine the results with personal symptoms and other tests for a comprehensive evaluation by a physician. If abnormalities are found, follow the doctor's advice regarding further management.

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