Tex. Health & Safety Code § 593.030
A resident voluntarily admitted to a residential care facility may not be detained more than 96 hours after the time the resident, the resident's parents if the resident is a minor, or the guardian of the resident's person requests discharge of the resident as provided by department rules, unless:
Added by Acts 1991, 72nd Leg., ch. 76, Sec. 1, eff. Sept. 1, 1991.
Acts 2015, 84th Leg., R.S., Ch. 1 (S.B. 219), Sec. 3.1443, eff. April 2, 2015.