Tex. Health and Safety Code § 87.063

(a) The commissioner and the department's committee for the protection of human subjects shall review each research proposal that requests the use of information in the central registry. The executive commissioner shall adopt rules establishing criteria to be used in deciding if the research design should be approved. A proposal that meets the approval criteria is considered to establish a valid interest as required by Section 87.062(a), and the commissioner and the committee shall authorize the researcher to review the records relevant to the research proposal and to contact cases and controls.

(b) If an investigator using central registry data under a research design approved under this section believes it is necessary to contact case subjects and controls, the investigator must submit a protocol describing the purpose and method to the commissioner and the department's committee for the protection of human subjects. If the contact protocol is approved, the investigator is considered to have established a bona fide research, development, or planning purpose and is entitled to carry out the contacts without securing additional approvals or waivers from any entity.