USDA AMS seeks accredited analytical laboratories to perform microbiological and fat testing supporting meat, poultry, egg, and aquatic product procurement programs, establishing AMS Designated Laboratories. The award will be an IDIQ firm-fixed-price contract with a Base Period and up to four option periods, covering performance from April 1, 2027 through March 31, 2032. Offerors must maintain ISO/IEC 17025 accreditation and meet all SOW technical, reporting, and quality assurance requirements. Testing must use approved methods such as FSIS MLG, AOAC, AOCS, or AMS-approved alternatives, with timely reporting of pathogen positives and secure handling of proprietary AMS data. Proposals must include all technical, management, past performance, and pricing components, a signed SF-1449, and adherence to specified electronic submission processes; incomplete proposals may not be considered.