CRP and COVID-19: Likewise, Gao et al. [51] found that, in a pattern of NTIS, FT3 was significantly and inversely associated with C-reactive protein (CRP), a general marker of inflammation, and IL-6 in nonseverely ill patients and survivors, but not in nonsurvivors, indicating that the inflammatory response may involve different manifestations of NTIS based on the different COVID-19 stage.