28 Tex. Admin. Code § 1.85
Except as otherwise provided, requests for admission shall be governed by the applicable provisions of the Texas Rules of Civil Procedure. Each matter for which an admission is requested shall be separately stated. The matter shall be deemed to be admitted without necessity for an order unless, within the prescribed time for responding, the party to whom the request is directed serves upon the requesting party a written answer or objection addressed to the matter. The requests for admission document must clearly set forth this provision for deemed admissions, in bold print or by underlining, in a conspicuous location calculated to inform the opposing party of the consequences of a failure to respond within the prescribed time, as provided in § 1.84 of this title (relating to Deadlines for Responses to Discovery Requests). The hearings officer or the commissioner or board may permit withdrawal or amendment of responses and deemed admissions upon a showing of good cause, if necessary in the interest of justice.
28 Tex. Admin. Code § 1.85