v3.26.1
Cover
Apr. 30, 2026
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Apr. 30, 2026
Entity File Number 001-14468
Entity Registrant Name PURE BIOSCIENCE, INC.
Entity Central Index Key 0001006028
Entity Tax Identification Number 33-0530289
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One 771 Jamacha Rd.
Entity Address, Address Line Two #512
Entity Address, City or Town El Cajon
Entity Address, State or Province CA
Entity Address, Postal Zip Code 92019
City Area Code (619)
Local Phone Number 596-8600
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company false