The Department of Veterans Affairs (VA) intends to enter into a Sole Source contract with One Lambda Inc. for the procurement of molecular SSO typing reagents necessary for HLA testing pertinent to donor-recipient transplantation at the VA Iowa City Health Care System. This contract will be established on an Indefinite Delivery/Indefinite Quantity (IDIQ) basis, covering the fiscal years 2026 to 2031, and emphasizes the unique compatibility of these reagents with existing systems and regulatory standards mandated by the American Society of Histocompatibility & Immunogenetics (ASHI). Interested vendors may express their interest and demonstrate their capability to meet the requirements; however, the government may proceed with the sole-source approach if no suitable alternatives are presented. Responses must be submitted by June 27, 2025, to Dennis Salmonsen at dennis.salmonsen@va.gov.