Privacy for research participants is a concept in research ethics which states that a person in human subject research has a right to privacy when participating in research. Some examples of typical scenarios are that a surveyor doing social research conducts an interview where the research participant is a respondent, or when a researcher for a clinical trial asks for a blood sample from a participant to see if there is a relationship between something which can be measured in blood and a person's health. In both cases, the ideal outcome is that any participant can join the study and neither the researcher nor the study design nor the publication of the study results would ever identify any participant in the study.