CRP and Hyponatremia: Identified factors have included: higher age, male gender, low oxygen saturation at admission, tachypnea and various laboratory determinants such as lymphopenia, low hemoglobin levels, elevated c-reactive protein (CRP), lactate dehydrogenase (LDH) and urea, hyponatremia, hyperkalemia and abnormal coagulation parameters [14, 21–28].