EXHIBIT 23 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM Board of Directors and Stockholders TECHNE Corporation Minneapolis, Minnesota We consent to the incorporation by reference in the Registration Statements (No. 333-37263, 333-88885, and 333-49962) on Form S-8 of TECHNE Corporation of our reports dated August 28, 2006, with respect to the consolidated balance sheets of TECHNE Corporation as of June 30, 2006 and 2005, and the related consolidated statements of earnings, stockholders' equity and comprehensive income, and cash flows for each of the years in the three-year period ended June 30, 2006, and the related financial statement schedule, management's assessment of the effectiveness of internal control over financial reporting as of June 30, 2006 and the effectiveness of internal control over financial reporting as of June 30, 2006, which reports appear in the June 30, 2006, annual report on Form 10-K of TECHNE Corporation. /s/ KPMG LLP Minneapolis, Minnesota August 30, 2006