(a) Not later than the 45th day after the date a child enters the conservatorship of the department, the child shall receive:
(1) a developmentally appropriate comprehensive assessment that includes:
(A) a screening for trauma; and
(B) interviews with individuals who have knowledge of the child's needs; and
(2) a screening for risk of commercial sexual exploitation using a validated, evidenced-informed tool selected by the Child Sex Trafficking Prevention Unit established under Section 772.0062, Government Code, if:
(A) validation guidelines based on the child's age indicate the screening is appropriate; or
(B) concerns of commercial sexual exploitation exist.
(b) The department shall develop guidelines regarding the contents of an assessment report.
(c) A single source continuum contractor under Subchapter B-1, Chapter 264, providing therapeutic foster care services to a child shall ensure that the child receives a comprehensive assessment under this section at least once every 90 days.