(i) This is a combined synopsis/solicitation for commercial items prepared in accordance with the format in FAR Subpart 12.6, as supplemented with additional information included in this notice. This announcement constitutes the only solicitation; proposals are being requested, and a separate written solicitation will not be issued. (ii) The solicitation number is 75N98026Q00465. This solicitation is issued as a Notice of Intent (NOI) for a non-competitive combined synopsis/solicitation to award a contract or purchase order without providing for full and open competition (including brand-name, if applicable). This acquisition is conducted under the authority of FAR 12.603, Streamlined Solicitation for Commercial Products or Commercial Services, and is not expected to exceed the simplified acquisition threshold. Additional authority includes 41 U.S.C. 1901 and FAR 6.302-3(a)(2)(ii). The National Institutes of Health (NIH), Office of the Director, Office of Acquisitions, intends to negotiate and award a firm fixed price Purchase Order on a non-competitive basis to: Seer, Inc. 3800 Bridge Pkwy, Suite 102 Redwood City, CA 94065 Contact: Pierre Mbarushimana Phone: 650-453-0901 Email: STAC-US@seer.bio for LC-MS (liquid chromatography¿mass spectrometry) analysis of 280 processed mouse serum samples using the proprietary Seer Proteograph Platform and Proteograph Analysis Suite (PAS). Seer, Inc. is the sole provider of the Proteograph workflow, Proteograph Sample Kits, and PAS software, and is therefore the only vendor capable of fulfilling this requirement as specified.