The CDC’s NCHHSTP intends to award a sole source purchase order to Imtakt USA for replacement liquid chromatography columns, which are consumables used in assays that detect antiretroviral drugs. These columns are proprietary and essential for maintaining validated testing methods, as substituting them would require costly revalidation and risk disrupting critical drug monitoring. The location for performance is Portland, Oregon, where the supplier is based. No competitive solicitation will be posted, but responsible sources may submit a capability statement to the Contracting Officer by the closing date of this posting. No specific budget amount or submission timeline is mentioned.