v3.26.1
Document and Entity Information
Jul. 20, 2026
Cover [Abstract]  
Amendment Flag false
Entity Central Index Key 0001726445
Document Type 8-K
Document Period End Date Jul. 20, 2026
Entity Registrant Name Seer, Inc.
Entity Incorporation State Country Code DE
Entity File Number 001-39747
Entity Tax Identification Number 82-1153150
Entity Address, Address Line One 3800 Bridge Parkway
Entity Address, Address Line Two Suite 102
Entity Address, City or Town Redwood City
Entity Address, State or Province CA
Entity Address, Postal Zip Code 94065
City Area Code 650
Local Phone Number 453-0000
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Security 12b Title Class A Common Stock, par value $0.00001 per share
Trading Symbol SEER
Security Exchange Name NASDAQ
Entity Emerging Growth Company false