This research paper critically studies modern diagnostic laboratory tests used for infectious diseases. A thorough analysis of the literature using a comprehensive approach reveals the effectiveness and limitations of any diagnostic approach. The paper opens with a description of timely and correct diagnostics that allow for effective measures to prevent and manage infectious diseases. The detailed literature review looks at various ting algorithms for algorithms identifying communicable diseases that contain microbiological traditions and serological and molecular techniques. The study begins with methods directed toward completing the literature review and the results and findings presented, including figures, tables, and graphs, to demonstrate them in a more explanatory way. The article critically studies various diagnostic procedures, discussing their positive aspects and shortcomings, which are essential for clinical practice and the public's well-being. The conclusion indicates that laboratory test algorithms are in good shape but also see room for improvement and propose helpful hints for better medical strategies while diagnosing infectious diseases.