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Cover
Oct. 01, 2025
Entity Addresses [Line Items]  
Document Type 8-K
Amendment Flag false
Document Period End Date Oct. 01, 2025
Current Fiscal Year End Date --12-31
Entity File Number 001-41177
Entity Registrant Name PROFUSA, INC.
Entity Central Index Key 0001859807
Entity Tax Identification Number 86-3437271
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One 626 Bancroft Way
Entity Address, Address Line Two Suite A
Entity Address, City or Town Berkeley
Entity Address, State or Province CA
Entity Address, Postal Zip Code 94710
City Area Code 925
Local Phone Number 997-6925
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock, par value $0.0001 per share
Trading Symbol PFSA
Security Exchange Name NASDAQ
Entity Emerging Growth Company true
Elected Not To Use the Extended Transition Period false
Former Address [Member]  
Entity Addresses [Line Items]  
Entity Address, Address Line One 345 Allerton Ave.
Entity Address, City or Town South San Francisco
Entity Address, State or Province CA
Entity Address, Postal Zip Code 94080