(1) This article 42 does not affect or apply to the gratuitous care of a person with a behavioral or mental health disorder by friends or members of the family or to any person taking care of a person with a behavioral or mental health disorder for hire who does not represent himself or herself or hold himself or herself out to the public as a trained or licensed psychiatric technician; but a person for hire shall not hold himself or herself out as or perform the full duties of a psychiatric technician who is not a psychiatric technician licensed under the provisions of this article 42.

(2) This article shall not be construed to prohibit the practice as a psychiatric technician by students enrolled in an accredited psychiatric technician educational program or by graduates of such accredited psychiatric technician educational program pending the results of the first licensing examination scheduled by the board following their graduation.

(3) Furthermore, this article shall not be construed to prohibit:

(a) Practical nursing; subsidiary workers in hospitals or similarly related institutions from assisting in the nursing care of patients where adequate medical and nursing supervision is provided;

(b) Subsidiary workers in the offices of persons licensed to practice medicine or dentistry in this state from assisting in the care of patients under the personal and responsible supervision and direction of such persons; or

(c) The practice of any legally qualified psychiatric technician of this state or another state who is employed by the United States government or any bureau, division, or agency thereof while in the discharge of his official duties.