The general requirements for informed consent in federally funded research are spelled out in 45 CFR.46.116 and 21 CFR 50.20. Some states have enacted requirements for informed consent that go beyond federal regulations. This module reviews the requirements for informed consent that are set out in federal regulations and in the Good Clinical Practice guidelines of the International Conference on Harmonization (ICH GCP). It is the principal investigator’s responsibility to know and abide by any additional state requirements.