v3.26.1
Document And Entity Information - shares
 3 Months Ended
Mar. 31, 2026
May 15, 2026
Document Information Line Items    
Entity Central Index Key 0001558569  
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Mar. 31, 2026  
Document Fiscal Year Focus 2026  
Document Transition Report false  
Entity File Number 001-40501  
Entity Registrant Name iSpecimen Inc.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 27-0480143  
Entity Address, Address Line One 8 Cabot Road  
Entity Address, Address Line Two Suite 1800  
Entity Address, City or Town Woburn  
Entity Address, State or Province MA  
Entity Address, Postal Zip Code 01801  
City Area Code (781)  
Local Phone Number 301-6700  
Title of 12(b) Security Common Stock, par value $0.0001 per share  
Trading Symbol ISPC  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   1,437,157
Amendment Flag false  
Document Fiscal Period Focus Q1  
Current Fiscal Year End Date --12-31