The Department of Health and Human Services, specifically the National Institutes of Health (NIH), is seeking proposals for a toxicity testing service on a new PET ligand, Fluorine-18-Fluorocellobiose, as part of the requirements for an Investigational New Drug (IND) application to the FDA. The project entails conducting a single-dose toxicity study in Sprague Dawley rats to assess potential toxic effects, establish the maximum tolerated dose (MTD), and determine the no observable adverse effect level (NOAEL), all under Good Laboratory Practice (GLP) conditions. This initiative is crucial for advancing biomedical research and improving imaging techniques in the diagnosis and treatment of infectious diseases. Interested parties must submit their proposals by April 4, 2025, with the contract period expected to last for one year, and inquiries can be directed to Lu Chang at lu-chang.lu@nih.gov.