| Document and Entity Information | Jun. 01, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K/A |
| Document Period End Date | Jun. 1, 2021 |
| Entity Registrant Name | VERACYTE, INC. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-36156 |
| Entity Tax Identification Number | 20-5455398 |
| Entity Address, Address Line One | 6000 Shoreline Court |
| Entity Address, Address Line Two | Suite 300 |
| Entity Address, City or Town | South San Francisco |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 94080 |
| City Area Code | 650 |
| Local Phone Number | 243-6300 |
| 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, $0.001 per share |
| Trading Symbol | VCYT |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
| Amendment Description | This Amendment No. 1 on Form 8-K/A is an amendment to the Current Report on Form 8-K (the “Form 8-K”) of Veracyte, Inc., a Delaware corporation (“Veracyte”), filed with the Securities and Exchange Commission on June 1, 2021, for the sole purpose of removing the check mark in the box relating to written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425), which was inadvertently checked in the Form 8-K. All other information in the Form 8-K is unchanged. |
| Amendment Flag | true |
| Entity Central Index Key | 0001384101 |
