Charles University, Faculty of Pharmacy in Hradec Králové Training Workplace Department of Analytical Chemistry Doctoral Degree Program Bioanalytical Methods Candidate Mgr. Andrea Vernerová Supervisor Assoc. Prof. RNDr. Lenka Kujovská Krčmová, Ph.D. Advisor MUDr. Ondřej Sobotka, Ph.D. Title of Doctoral Thesis Application of modern analytical methods in clinical research The dissertation thesis, composed as a compilation of five publications, is dealing with the development, optimization and validation of chromatographic methods and extraction procedures for the determination of early activation of the immune system biomarkers (neopterin, kynurenine, and tryptophan) in saliva and gingival crevicular fluid in oncological patients and patients...