XML 6 R1.htm IDEA: XBRL DOCUMENT v3.25.1
Document and Entity Information - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Jun. 28, 2024
Cover [Abstract]    
Entity Registrant Name PLUS THERAPEUTICS, INC.  
Entity Central Index Key 0001095981  
Trading Symbol PSTV  
Current Fiscal Year End Date --12-31  
Entity Well-known Seasoned Issuer No  
Entity Voluntary Filers No  
Entity Interactive Data Current Yes  
Entity Current Reporting Status Yes  
Entity Filer Category Non-accelerated Filer  
Entity Public Float   $ 8.2
Document Fiscal Year Focus 2024  
Document Fiscal Period Focus FY  
Document Type 10-K/A  
Amendment Flag false  
Document Period End Date Dec. 31, 2024  
Entity Shell Company false  
Entity Small Business true  
Entity Emerging Growth Company false  
ICFR Auditor Attestation Flag false  
Document Financial Statement Error Correction [Flag] false  
Title of 12(b) Security Common Stock, par value $0.001 per share  
Security Exchange Name NASDAQ  
Entity File Number 001-34375  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 33-0827593  
Entity Address, Address Line One 2710 REED ROAD  
Entity Address, Address Line Two SUITE 160  
Entity Address, City or Town HOUSTON  
Entity Address, State or Province TX  
Entity Address, Postal Zip Code 77051  
City Area Code 737  
Local Phone Number 255-7194  
Document Annual Report true  
Document Transition Report false