The CDC intends to award a sole source contract to QCMD for customized Proficiency Testing Panel Services, specifically for enterovirus testing panels. The vendor will prepare, distribute, and collect data for these panels, which external laboratories must use to demonstrate proficiency. QCMD is identified as the only vendor capable of meeting the requirement due to its specialization in External Quality Assessment schemes. Responses to this notice must be submitted by 11:00 a.m. EDT on 22 June 2026. No budget amount or performance location is specified.