Okla. Stat. tit. 43A, § 43A-11-105: Validity - Witnesses - Eligibility as attorney-in-

fact.

A. An advance directive for mental health treatment is valid

only if it is signed by the declarant and two capable witnesses

eighteen (18) years of age or older. The witnesses shall attest

that the declarant:

1. Is known to them;

2. Signed the advance directive for mental health treatment in

their presence;

3. Appears to be capable; and

4. Is not acting under duress, fraud or undue influence.

B. None of the following persons shall be eligible to serve as

attorney-in-fact to the signing of an advance directive for mental

health treatment:

1. The attending physician or psychologist or an employee of

the physician or psychologist; or

2. An owner, operator or employee of a health care facility in

which the declarant is a consumer or resident.