OBJECTIVE: The objective of the study is to collect and present the values of these inflammatory indicators in patients who are positive for SARS-CoV2 compared to the same indicators in patients who were not positive for this infection with known treatment outcomes taken from BIS. STUDY DESIGN: The study was conducted as a cross-sectional study. PARTICIPANTS AND METHODS: The research included 50 randomly selected patients, of different ages and genders, for whom certain tests were performed in OB Tomislav Bardek Koprivnica. 30 samples of findings were from patients who are positive for SARS-CoV2, while the findings of 20 patients served as a control sample, those who were not positive for this infection. The analysis of the existing medical documentation of OB Tomislav Bardek Koprivnica was performed in patients for whom the following parameters were determined: CRP was determined by immunoturbidimetry, PCT by CMIA, and CBC and DBC by optical flow cytometry on a hematology counter. RESULTS: The study involved 50 patients, of whom 56% were men and 44% were women with an average age of 67 years. The study did not prove statistically significant differences in biochemical markers of inflammation considering the group of infection. The only statistically significant value was demonstrated in the value of PCT, which differs significantly in patients with COVID-19 infection and those with other infectious diseases. CONCLUSION: COVID-19 is a very common infection that affects a large number of people. Inflammatory markers of CBC, DBC, CRP and PCT can be determined for the diagnosis of inflammation, but they are not specific enough and must be confirmed by further tests before making a final diagnosis.