California Code, Welfare and Institutions Code - WIC § 711

(a) When it appears to the court, or upon request of the prosecutor or counsel for the minor, at any time, that a minor who is alleged to come within the jurisdiction of the court under Section 602, may have a serious mental disorder, is seriously emotionally disturbed, or has a developmental disability, the court may order that the minor be referred for evaluation, as described in Section 712.

(b) A minor, with the approval of his or her counsel, may decline the referral for mental health evaluation described in Section 712 or the multidisciplinary team review described in Section 713, in which case the matter shall proceed without the application of Sections 712 and 713, and in accordance with all other applicable provisions of law.