Compensation or Reimbursement
Subjects are sometimes paid for their participation in research, especially in the early phases of investigational drug, biologic or device development. Payment to research subjects for participation in studies is considered a a recruitment incentive. Financial incentives are most often used when health benefits to subjects are remote or nonexistent. Volunteers may be offered compensation in certain trials for their time, and for discomfort that may be experienced during the trial. The amount of compensation is determined by the amount of time you will be required to dedicate to the trial, and to the level of discomfort that might be associated with medical or surgical procedures related directly to the study. Payment information, including the amount and schedule of payment(s), as well as any possible costs to volunteers who participate in a study, are discussed with potential participants during the informed consent process, and documented in the informed consent form.
This information sourced from :http://www.fda.gov/