CRP and COVID-19: Clusters of tests for inflammatory markers (eg, LDH, CRP, and ferritin) appeared across most sites as predictive of hospitalizations, specifically for COVID-19, which fits intuitively because an underlying systemic pathophysiological mechanism of SARS-CoV-2 is thought to be an inflammatory process [39,40], and guidelines therefore have encouraged health care providers to check inflammatory markers on COVID-19 admissions [41,42].