NPPB and COVID-19: Of COVID-19 positive subjects, C-reactive protein (CRP, q < 0.0001), and procalcitonin (q = 0.035) were found to be elevated in subjects with greater COVID-19 severity; whereas no statistically significant changes were observed in ferritin, hemoglobin, glucose, D-dimer, Hs troponin-I, BNP, LDH, and lactate between cohorts based on COVID-19 severity (Table 2).