Regular Members (RM): who shall be individuals with an advanced degree (Ph.D., M.D. or equivalent) active interest in research, teaching and clinical practice relating to the physiology, pathophysiology, therapeutics and drug discovery related to some extent with regulatory peptide biology. Those without advanced degrees but considerable interest in, and experience in the field, may be eligible for RM on the recommendation of a current member.

Student Members (SM): who shall be individuals enrolled in programs at degree-granting institutions of higher education.

Distinguished Members (DM): shall be individuals whose contributions to the regulatory peptide field and/or to the Society are judged significant according to criteria established by the Council. Distinguished members shall be nominated by 10 members of the Society, and a letter of acceptance from the nominee to the Membership Committee is required. Nominations for DM can be approved by Council majority vote at any time. The DM will receive a diploma in recognition to his/her contribution to the field and/or the Society during the upcoming General Assembly of a given RegPep.

Affiliate Members (AM): will be individuals, institutions, companies or organizations that share the objectives and interests of the Society. They can contribute human or financial resources to the activities of the organization.