Cover Page
Jan. 05, 2022
Cover [Abstract]  
Document Type 8-K
Document Period End Date Jan. 05, 2022
Entity Registrant Name CAREDX, INC.
Entity Incorporation, State or Country Code DE
Entity File Number 001-36536
Entity Tax Identification Number 94-3316839
Entity Address, Address Line One 1 Tower Place,
Entity Address, Address Line Two 9th Floor
Entity Address, City or Town South San Francisco,
Entity Address, State or Province CA
Entity Address, Postal Zip Code 94080
City Area Code 415
Local Phone Number 287-2300
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock, $0.001 Par Value
Trading Symbol CDNA
Security Exchange Name NASDAQ
Entity Emerging Growth Company false
Entity Central Index Key 0001217234
Amendment Flag false