The Environmental Protection Agency (EPA) is issuing a presolicitation notice regarding its intent to sole source a license for PPARalpha and PPARgamma CALUX services. This procurement aims to secure specialized professional services under the NAICS code 541990, which encompasses all other professional, scientific, and technical services. The PPARalpha and PPARgamma CALUX license is critical for advancing research and regulatory activities related to environmental health and safety. Interested parties can reach out to Agnes Choate at Choate.Agnes@epa.gov or call 919-541-2579 for further details regarding this opportunity.