Informed Consent Letter to Research Study Participant is a document that outlines the details of the research study, including the purpose, procedures, risks and benefits, and the participant's rights. This type of document is used to ensure that the potential research study participant understands the purpose and procedures of the research study, as well as any potential risks and benefits. It is important that the participant provides consent prior to participating in the research study. There are two main types of Informed Consent Letters to Research Study Participants: a Standard Informed Consent Letter and a Comprehensive Informed Consent Letter. A Standard Informed Consent Letter outlines the basic information regarding the research study, including the purpose, procedures, risks and benefits, and the participant's rights. It does not include all the possible risks and benefits of the research study, nor does it provide a detailed explanation of the research study or the participant's rights. A Comprehensive Informed Consent Letter includes a more detailed description of the research study, including the purpose, procedures, risks and benefits, and the participant's rights. It provides a comprehensive explanation of the research study and the participant's rights. It also includes all the potential risks and benefits of the research study.