There is a clinical laboratory working in Centro Outpatient Clinic, where various investigations are performed quickly and modern. Such investigations are performed: general clinical, hematological, immunology, markers of communicable disease, biochemical (total more than 300 analytes). In 2006, the clinical laboratory was equipped newly, though constantly modernized according to medical science advance and patients’ needs. Thanks to modern equipment and work organization (queue management system) investigations are performed in only 15–60 minutes. There are conditions to perform urgent investigations and perks to patients of different age groups.