CRP and COVID-19: The laboratory parameters associated with severe COVID-19 outcome are higher than twofold D-dimer levels (more than 1000 ng/mL), C-reactive protein levels (more than 100 mg/L), lactate dehydrogenase levels (more than 245 units/L), more than twofold the normal upper limit for troponin, more than 500 mcg/L ferritin, and more than twofold the normal upper limit for creatinine-kinase [38].