1. Food and Drug Administration (FDA): http://www.fda.gov
2. Center for Biologics Evaluation and Research (CBER): http://www.fda.gov/cber
3. Department of Health & Human Services (HHS): http://www.hhs.gov
4. Clinical Laboratory Improvement Amendments (CLIA): http://www.cms.gov/clia
5. Center for Medicare & Medicaid Services (CMS): http://www.cms.gov