*1.2.6 Laboratory abnormalities*

Particular laboratory features have also been associated with worse outcomes. These include, Lymphopenia, Thrombocytopenia, Elevated liver enzymes, Elevated lactate dehydrogenase (LDH), Elevated inflammatory markers (eg, C-reactive protein [CRP], ferritin) and inflammatory cytokines (ie, interleukin 6 [IL-6] and tumor necrosis factor [TNF]-alpha), Elevated D-dimer (>1 mcg/mL), Elevated prothrombin time (PT), Elevated troponin, Elevated creatine phosphokinase (CPK), Acute kidney injury. Deficiencies in certain micronutrients, in particular vitamin D, have been associated with more severe disease in observational studies.
