Exhibit 32.1
CERTIFICATION OF CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER
PURSUANT TO
18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
I, Peter Maag, Chief Executive Officer, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:
| 1. | the Quarterly Report on Form 10-Q for the quarter ended June 30, 2015, (the “Periodic Report”) fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and |
| 2. | information contained in the Periodic Report fairly presents, in all material respects, the financial condition and results of operations of CareDx, Inc. |
| Date: August 12, 2015 | By: | /s/ Peter Maag | ||||
| Peter Maag | ||||||
| President and Chief Executive Officer | ||||||
| (Principal Executive Officer) |
I, Kenneth E. Ludlum, Chief Financial Officer, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:
| 1. | the Quarterly Report on Form 10-Q for the quarter ended June 30, 2015, (the “Periodic Report”) fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and |
| 2. | information contained in the Periodic Report fairly presents, in all material respects, the financial condition and results of operations of CareDx, Inc. |
| Date: August 12, 2015 | By: | /s/ Kenneth E. Ludlum | ||||
| Kenneth E. Ludlum | ||||||
| Chief Financial Officer | ||||||
| (Principal Accounting and Financial Officer) |