General form of registration statement for all companies including face-amount certificate companies

Document and Entity Information

Document and Entity Information
9 Months Ended
Sep. 30, 2020
Cover [Abstract]  
Entity Registrant Name GT Biopharma, Inc.
Entity Central Index Key 0000109657
Document Type S-1/A
Document Period End Date Sep. 30, 2020
Amendment Flag true
Amendment Description To update the document.
Entity Filer Category Non-accelerated Filer
Entity Emerging Growth Company false
Entity Small Business true
Entity Incorporation, State or Country Code DE