Researchers can track the status of research notification applications submitted to ATSDR. ATSDR estimates the approval process could take up to 60 business days from the receipt of a complete application. Once approved, ATSDR will notify the applicant by email of the final application status. If missing information/documents are identified in the application, ATSDR will notify the applicant via email. For questions or concerns about the application process, please contact us at 1-877-442-9719 or by email at ALSResearch@cdc.gov (Monday through Friday; 8am to 5pm ET).