Moreover, in logistic regression analysis, baseline CRP values above 0.8 mg/dl in COVID-19 patients were associated with a 9-fold risk for compromised endothelial function (i.e., LnRHI values below 0.51) during the acute phase (OR: 9.0; 95% CI: 1.47–81.4, p = 0.027) (Figure 2). Here, CRP is linked to COVID-19.