Exhibit 31.1
CHIEF EXECUTIVE OFFICER’S
CERTIFICATION UNDER
SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002
I, Hany Massarany, President and Chief Executive Officer of the registrant, certify that:
| 1. | I have reviewed this Amendment No. 1 to Annual Report on Form 10-K/A of GenMark Diagnostics, Inc.; and |
| 2. | Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report. |
/s/ HANY MASSARANY |
| Hany Massarany |
| President and Chief Executive Officer |
April 18, 2013
