This is a combined synopsis/solicitation under FAR Part 12 for commercial items and constitutes the only solicitation; no separate written solicitation will be issued. The agency seeks quotations for proficiency samples for the Field Service Laboratories (FSL) supporting all FSIS labs. The acquisition is a total small business set-aside under NAICS 541380, Testing Laboratories and Services, with a $19M small business size standard. All responsible sources may submit a quotation for agency consideration.