Ohio Revised Code Title XXI. Courts Probate Juvenile § 2135.05

(A) A declaration may designate an adult to act as a proxy to make decisions about the mental health treatment of the declarant and may designate an adult as an alternate proxy as described in section 2135.02 of the Revised Code. A proxy designated to make decisions about mental health treatment may make decisions about mental health treatment on behalf of the declarant only when the declaration has become operative. The decisions of the proxy regarding the mental health treatment of the declarant must be consistent with desires the declarant has expressed in the declaration.

(B) The following persons may not serve as a proxy for a declarant:

(C) Divisions (B)(1) and (2) of this section do not apply if the declarant and proxy are related by blood, marriage, or adoption.

(D) A proxy may withdraw from a declaration prior to the declaration becoming operative by giving notice to the declarant. If the declaration is operative, a proxy may withdraw by giving written notice to the declarant's mental health treatment provider or the health care facility providing services to the declarant. The mental health treatment provider or the health care facility shall note the withdrawal of a proxy as part of the declarant's medical record.