Indiana Code Title 31. Family Law and Juvenile Law § 31-32-16-4

Sec. 4. (a) The juvenile court, after making an ex parte determination that there is probable cause to believe the child is a drug or alcohol abuser (as defined in 440 IAC 4.4-1-1), shall order the child named in the petition to undergo a drug and alcohol assessment.  The assessment shall be performed by:

The person who performs the assessment under this section must be different from the person who submitted the affidavit under section 2 of this chapter.  If it is determined that involuntary treatment is necessary, the assessment must include a recommended level of care and length of treatment.

(b) After completion of the assessment, the juvenile court shall conduct a hearing.  Each person who performed an assessment must be present and available to testify at the hearing.