Annual report pursuant to Section 13 and 15(d)


Cover - USD ($)
12 Months Ended
Dec. 31, 2021
Mar. 25, 2022
Jun. 30, 2021
Cover [Abstract]      
Entity Registrant Name VOLITIONRX LIMITED    
Entity Central Index Key 0000093314    
Document Type 10-K    
Amendment Flag false    
Entity Voluntary Filers No    
Current Fiscal Year End Date --12-31    
Entity Well Known Seasoned Issuer No    
Entity Small Business true    
Entity Shell Company false    
Entity Emerging Growth Company false    
Entity Current Reporting Status Yes    
Document Period End Date Dec. 31, 2021    
Entity Filer Category Non-accelerated Filer    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2021    
Entity Common Stock Shares Outstanding   53,775,261  
Entity Public Float     $ 115,639,384
Document Annual Report true    
Document Transition Report false    
Entity File Number 001-36833    
Entity Incorporation State Country Code DE    
Entity Tax Identification Number 91-1949078    
Entity Interactive Data Current Yes    
Entity Address Address Line 1 13215 Bee Cave Parkway    
Entity Address Address Line 2 Suite 125    
Entity Address Address Line 3 Galleria Oaks B    
Entity Address City Or Town Austin    
Entity Address State Or Province TX    
Entity Address Postal Zip Code 78738    
City Area Code 646    
Local Phone Number 650-1351    
Security 12b Title Common Stock, par value $0.001 per share    
Trading Symbol VNRX    
Security Exchange Name NYSEAMER    
Icfr Auditor Attestation Flag false    
Auditor Name Sadler, Gibb & Associates, LLC    
Auditor Firm Id 3627    
Auditor Location Draper, UT