This is a notice of intent to award a sole-source, firm fixed price purchase order to One Lambda, Inc. for specific HLA typing and antibody screening reagents. The award is justified because the vendor's unique reagents are already validated and in use, and switching to another vendor would require approximately two months of extensive validation, which would disrupt the lab's ability to provide timely patient results. The performance location is the vendor's facility in West Hills, CA. The HLA Lab provides critical clinical testing and consultation to support patient transplants and care at the Clinical Center.