Informed consent of the participant in medical research is the expression of the recognition of the persons' autonomy and his right to physical and psychological integrity. The legal and ethical documents which regulate this form of medical activity define the qualities which this consent needs to fulfill in order to be considered valid (well informed participant, freedom and capacity to give consent), that is making the medical research legally and ethically accepted. Bearing this in mind, the subject of the author's interest in this paper is the analysis to what extent these normative requirements and theoretical ideals are met in obtaining the informed consent. The author has found out that, on the basis of the results of the studies rel...