The CDC intends to award a sole-source contract to Emory University for collecting fresh matched whole blood and urine specimens from individuals receiving or not receiving ARVs for HIV treatment or prevention. These specimens must be delivered to CDC within 24 hours to support development and validation of novel ARV detection methods. The work will be performed at Emory University and CDC locations, with no specified budget amount. Responses to this notice must be submitted by June 2, 2026. This opportunity is limited to Emory University due to its unique ability to provide fresh specimens within a few hours without compromising integrity.