CRP and lymphopenia: Plenty of biomarkers measured in COVID-19 patients were associated with disease severity and worse outcomes such as lymphopenia and elevated D-dimer, ferritin, lactate dehydrogenase (LDH), troponin, C-reactive protein (CRP), aspartate aminotransferase (AST), alanine aminotransferase (ALT), and creatinine [7,8].