Cal. Penal Code § 11165.12

As used in this article, the following definitions shall control: (a) “Unfounded report” means a report that is determined by the investigator who conducted the investigation to be false, to be inherently improbable, to involve an accidental injury, or not to constitute child abuse or neglect, as defined in Section 11165.6. (b) “Substantiated report” means a report that is determined by the investigator who conducted the investigation to constitute child abuse or neglect, as defined in Section 11165.6, based upon evidence that makes it more likely than not that child abuse or neglect, as defined, occurred. A substantiated report shall not include a report where the investigator who conducted the investigation found the report to be false, inherently improbable, to involve an accidental injury, or to not constitute child abuse or neglect as defined in Section 11165.6. (c) “Inconclusive report” means a report that is determined by the investigator who conducted the investigation not to be unfounded, but the findings are inconclusive and there is insufficient evidence to determine whether child abuse or neglect, as defined in Section 11165.6, has occurred.