Tex. Health & Safety Code § 486.024
(a) Before the 21st day after the date the person receives notice under Section 486.023, the person in writing may:
Added by Acts 2005, 79th Leg., Ch. 282 (H.B. 164), Sec. 9, eff. August 1, 2005.
Acts 2015, 84th Leg., R.S., Ch. 1 (S.B. 219), Sec. 3.1255, eff. April 2, 2015.