CRP and Infertility: PCOS is one of the diseases associated with infertility and inflammation, which leads to an increase in inflammatory markers such as CRP, IL‐18, the number of white blood cells, monocyte chemoattractant protein‐1 (MCP‐1), and macrophage inflammatory protein α‐1 (MIP‐1α), as well as changes in the expression of IL‐6 and TNF‐α (Rudnicka et al., 2021).