Laboratory techniques in microbiology

In this talk, the focus is laboratory techniques in microbiology, supported by coverage of laboratory techniques for culturing and identifying microorganisms, including the use of selective media, inoculation and staining. We will discuss clinical laboratory practices such as antimicrobial susceptibility testing, covering methods like disc diffusion and the role of quality control. Modern molecular methods for pathogen detection, including PCR, sequencing, and moldy tooth will also be explored. Finally, we will emphasize essential biosafety principles and lab practices that safeguard personnel and ensure reliable results. Microbes are everywhere, but microbiology stands out for the techniques that help us study, identify, and understand these invisible forms of life. Culturing microorganisms is key. Growing bacteria or fungi on suitable media lets us observe colonies, study metabolism, and isolate pure strains. Selective and enriched media support different microbes. Incubators and a septic technique ensure precise contamination free results. Once we have our samples and media, inoculation means transferring microorganisms in a controlled sterile way. Techniques like streak plating, spread plates or inoculating broths use sterile loops or pipets. After incubation, observation with staining distinguishes gram positive from gram negative bacteria, which is crucial for identification.