CRP and COVID-19: In case they suspected a potential COVID-19 patient, on the basis of the clinical picture (fever, shortness of breath, chest pain, dry cough, changes in senses of taste and smell, stomach problems), a rapid serological test for COVID-19 was required, as well as an X-ray of the lungs and heart and laboratory analysis (complete blood count, sedimentation, lactate dehydrogenase, C-reactive protein, ferritin, D-dimer) [11].