CRP and acute kidney injury: Yuan et al. (2017) found an association between various clinical measures (WBC count, N count, and CRP levels) and CI-AKI incidence in ACS patients who undergo PCI. Similarly, Gao et al. (2011) also found an association between CRP level and the incidence of CI-AKI in patients who underwent PCI. In accordance with these studies, we found that a higher pre-procedure WBC count was independently associated with the development of CI-AKI. Our findings align with the results of Yuan et al. (2017) but extend to the patients not diagnosed with ACS.