The U.S. Geological Survey (USGS) Upper Midwest Water Science Center seeks an experienced laboratory to provide virus isolation and molecular RNA analysis services under a single-award open-market Blanket Purchase Agreement (BPA). The BPA is anticipated to run from October 19, 2026 through October 18, 2030, with a maximum ordering limit of $300,000.00 over the four-year term. The work falls under NAICS 541380 (Testing Laboratories and Services), with a $19.0 million size standard, and it is not a Small Business Set-Aside. The BPA will be established under FAR Part 12 commercial procedures to meet anticipated recurring needs for these services. Vendors must have an active SAM registration for federal government contracts.