Laboratory assistant (medical). There are laboratory technicians with higher medical and secondary medical education. The latter are trained by medical assistant laboratory branches of medical schools (see Medical Education). A nurse who has a secondary medical education and has completed specialization courses can also work as a laboratory assistant. Depending on the profile of the laboratory, there are laboratory technicians of the clinical diagnostic laboratory, sanitary-hygienic, bacteriological, histological, etc. The laboratory's duties include taking material for research - taking blood, sensing the stomach, epilating hair, etc .; preparation of preparations for microscopy; preparation of reagents, dyes, nutrient media and their proper storage; keeping medical records - registration of material accepted for research and analysis results, medical and economic reporting. The laboratory assistant has the right to independently carry out a number of analyzes - macroscopic and chemical research of clinical material, counting the number of blood corpuscles, culture on nutrient media , setting a series of serological reactions, etc. The laboratory assistant is obliged to sign the analyzes made by him. The laboratory technician should be well acquainted with safety techniques , as work in the laboratory can have its own hazards: the danger of infection, poisoning, burns, injuries, eye fatigue. In order to avoid infection, the laboratory assistant should always work in a lab coat buttoned at the back; do not smoke or eat at the laboratory table; after work, the surface of the table should be wiped with a solution of phenol or chloramine . Poisoning can be observed in studies related to the release of harmful vapors and gases. Prevention is reduced to good ventilation of laboratory rooms and the implementation of relevant work in a fume hood. Thermal burns can occur when working near a fire with flammable substances, and chemical burns can occur when working with caustic alkalis and concentrated acids. Working with these substances requires knowledge of their properties and good knowledge of laboratory research techniques. In order to avoid injuries associated with improper use of equipment (centrifuge, autoclave, etc.), it is necessary to strictly observe the rules of its operation and periodically conduct technical inspection. Fatigue of the eyes, caused by eye strain during microscopy and work with measuring pipettes, can be prevented with a proper lighting device, with small interruptions in work at the first signs of fatigue .