Texas Civil Practice and Remedies Code - CIV PRAC & REM § 90.005. Prohibited Basis for Diagnosis

(a) For purposes of this chapter, a physician may not, as the basis for a diagnosis, rely on the reports or opinions of any doctor, clinic, laboratory, or testing company that performed an examination, test, or screening of the exposed person's medical condition that was conducted in violation of any law, regulation, licensing requirement, or medical code of practice of the state in which the examination, test, or screening was conducted.

(b) If a physician relies on any information in violation of Subsection (a), the physician's opinion or report does not comply with the requirements of this chapter.