Quarterly report pursuant to Section 13 or 15(d)

Organization and Operations (Details Narrative)

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Organization and Operations (Details Narrative) - shares
3 Months Ended
Mar. 31, 2024
Feb. 02, 2024
Feb. 01, 2024
Dec. 31, 2023
Revers stock split ratio On February 1, 2024, the Company announced a reverse stock-split of its common stock, par value $0.001 per share, at a ratio of 1 for 30. The reverse stock-split became effective on February 2, 2024. The Company’s common stock began trading on a reverse stock-split-adjusted basis on The Nasdaq Capital Market on February 5, 2024 under the existing trading symbol “GTBP.”      
Common stock, shares outstanding 1,380,633     1,380,633
Common stock, shares authorized 250,000,000     250,000,000
Common Stock [Member]        
Common stock, shares outstanding   1,380,633 41,419,000