The results of routine blood analysis should look at the three details, which are often referred to as the number of red blood cells, white blood cells and platelets, and the concentration of hemoglobin. The percentage and absolute value of neutrophils, monocytes, lymphocytes and eosinophils should be taken into account in the leukocyte classification. Usually, a significantly higher white blood cell count with an increase in the absolute value and percentage of neutrophils should be considered as a bacterial infection. A normal or reduced white blood cell count with an increase in the absolute value and percentage of monocytes and lymphocytes is usually considered a viral infection. Decreased red blood cell count and decreased hemoglobin concentration are usually considered to be anemia. An increase in hemoglobin concentration with an increase in erythrocyte count is considered erythrocytosis. Thrombocytopenia is usually considered if the patient presents with bleeding from the skin and mucous membranes, accompanied by a decrease in platelet count. If the platelets are increased, the patient needs to be monitored for infection and abnormal hematopoietic function of the blood system.