C反应蛋白(CRP)是血清中的一种蛋白质成份,因能与肺炎球菌表面的C 物质(一种多糖抗原)发生沉淀反应而称之,主要在肝细胞内合成,由5个相同的非糖基多肽亚单位以非共价键连接构成。正常人血清中含量甚微,健康成人为0.8μg/ml,90%的人在8μg/ml 以下,99%不到10μg/ml。94%的3天内新生儿CRP≤15μg/ml,一周后迅速降低。其生物学功能尚未完全阐明,可 C-reactive protein (CRP), a protein component of serum, is said to be precipitated in response to a substance C (a polysaccharide antigen) on the surface of pneumococcal bacteria. It is mainly synthesized in liver cells and consists of five identical Glycoproteomic subunits are constructed by non-covalent linkages. Normal human serum content is very small, 0.8μg / ml in healthy adults, 90% of people in the 8μg / ml or less, 99% less than 10μg / ml. 94% of newborns within 3 days CRP ≤ 15μg / ml, a week later decreased rapidly. Its biological function has not yet been fully elucidated