Methodical instructions are compiled in accordance with the federal state educational standard and the work program of the discipline "Laboratory diagnostics" , "Dermatology" , "Epizootology and infectious diseases" and are intended for laboratory and practical training of students of the Faculty of Veterinary Medicine and Biotechnology courses : "Laboratory diagnostics", "Epizootology and infectious diseases", "Microbiology and mycology" and "Dermatology" specialty 36. 05. 01 Veterinary medicine, and “Infectious diseases” in the direction of training 36. 03. 01 Veterinary and sanitary examination. Instructions contain brief theoretical information, a description of the laboratory work, the method of performance, tasks for performance and a list of references. Particular attention is paid to those diagnostic techniques that can be used in practice by every veterinarian. Printed by the decision of the editorial and publishing board of the FSBEI VO Vologda GMHA .