Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statement No. 333-213912 on Form S-8 of our report dated March 22, 2019, relating to the consolidated financial statements of Fulgent Genetics, Inc. and subsidiaries (which report expresses an unqualified opinion and includes an explanatory paragraph related to the Company’s change in method of accounting for revenue from contracts with customers in fiscal year 2018 due to the adoption of the new revenue standard), appearing in this Annual Report on Form 10-K of Fulgent Genetics, Inc. for the year ended December 31, 2018.

/s/ DELOITTE & TOUCHE LLP

Los Angeles, California

March 22, 2019