The National Institutes of Health (NIH), specifically the National Institute of Allergy and Infectious Diseases (NIAID), is seeking to establish an annual full service maintenance contract for two Multi-Scan LFER PET/CT IN-VIVO Animal Imager instruments located in Bethesda, Maryland. This contract is essential for supporting clinical studies that utilize advanced imaging techniques to monitor tuberculosis treatment responses in animal models, thereby enhancing the understanding of the disease's complexities in humans. The procurement is intended to be negotiated on a sole source basis with Mediso USA LLC, as no other vendor can provide the necessary service without voiding the equipment's warranty, which expires in June 2025. Interested parties may submit capability statements via the NIAID electronic Simplified Acquisition Submission System (eSASS) by May 13, 2025, at 5:00 PM ET, with all submissions requiring prior registration in the eSASS system. For further inquiries, contact Dana Monroe at dana.monroe@nih.gov or call 406-375-9814.