1. Danger to self: The person must be an immediate threat to themselves, usually by being suicidal. Someone who is severely depressed and wishes to die would fall under this category (though they generally have to have expressed a plan to commit suicide and not just a wish to die).
  2. Danger to others: The person must be an immediate threat to someone else's safety.
  3. Gravely disabled:
    1. Adult (patients over 18 years of age): The person's mental condition prevents him/her from being able to provide for food, clothing, and/or shelter, and there is no indication that anyone is willing or able to assist him/her in procuring these needs. This does not necessarily mean homeless, as a homeless person who is able to seek housing (even in a temporary shelter) when weather demands it would not fall under this category. Also, the mere lack of resources to provide food, clothing, or shelter is not dispositive; the inability must be caused by the psychiatric condition.
    2. Minor (patients under 18 years of age): The person is unable to provide for his/her food, clothing, and/or shelter or to make appropriate use of them even if these are supplied directly—for example, a psychotic adolescent who refuses to eat because he/she believes his/her parents are poisoning them.
  4. Peace officer: for the purposes of this section also means a jailer seeking to transport or transporting a person in custody to a designated facility for assessment consistent with Section 4011.6 or 4011.8 of the Penal Code and Section 5150.