The Department of Health and Human Services, specifically the Office of Assistant Secretary for Preparedness and Response, has issued a Special Notice regarding the cancellation of the Combined Synopsis/Solicitation Notice ID 75A50424R00006 for Multi-Antigen Diagnostic Tests. This cancellation indicates that the procurement for these in-vitro diagnostic substances, which are critical for various health assessments, will no longer proceed as initially planned. The opportunity was set aside for small businesses under the SBA guidelines, emphasizing the government's commitment to supporting small enterprises in the healthcare sector. For further inquiries, interested parties can contact Rachelle Colon-Serna at rachelle.colon-serna@hhs.gov.