v3.25.4
Cover - USD ($)
 12 Months Ended
Dec. 31, 2025
Mar. 02, 2026
Jun. 30, 2025
Document Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Transition Report false    
Document Financial Statement Error Correction [Flag] false    
Entity Interactive Data Current Yes    
ICFR Auditor Attestation Flag false    
Amendment Flag false    
Document Period End Date Dec. 31, 2025    
Document Fiscal Year Focus 2025    
Document Fiscal Period Focus FY    
Documents Incorporated by Reference [Text Block]

The registrant intends to file a definitive proxy statement relating to its Annual Meeting of Stockholders within 120 days of the fiscal year ended December 31, 2025. Portions of such definitive proxy statement are incorporated by reference in Part III of the Form 10-K to the extent described therein.

    
Entity Information [Line Items]      
Entity Registrant Name Bluejay Diagnostics, Inc.    
Entity Central Index Key 0001704287    
Entity File Number 001-41031    
Entity Tax Identification Number 47-3552922    
Entity Incorporation, State or Country Code DE    
Current Fiscal Year End Date --12-31    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Shell Company false    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company true    
Entity Ex Transition Period false    
Entity Public Float     $ 2,570,000
Entity Contact Personnel [Line Items]      
Entity Address, Address Line One 360 Massachusetts Avenue    
Entity Address, Address Line Two Suite 203    
Entity Address, City or Town Acton    
Entity Address, State or Province MA    
Entity Address, Postal Zip Code 01720    
Entity Phone Fax Numbers [Line Items]      
City Area Code (844)    
Local Phone Number 327-7078    
Entity Listings [Line Items]      
Title of 12(b) Security Common Stock, par value $0.0001 per share    
Trading Symbol BJDX    
Security Exchange Name NASDAQ    
Entity Common Stock, Shares Outstanding   972,215