v3.26.1
Cover
Jul. 14, 2026
Cover [Abstract]  
Document Type S-1
Amendment Flag false
Entity Registrant Name Valion Bio, Inc.
Entity Central Index Key 0001787740
Entity Tax Identification Number 81-4016391
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One 1305 E. Houston Street
Entity Address, Address Line Two Building 1, Suite 311
Entity Address, City or Town San Antonio
Entity Address, State or Province TX
Entity Address, Postal Zip Code 78205
City Area Code (888)
Local Phone Number 276-6888
Entity Filer Category Non-accelerated Filer
Entity Small Business true
Entity Emerging Growth Company true
Elected Not To Use the Extended Transition Period false