(1) A person gives
"informed consent" to the person’s treatment by regulated treatment only if—(a) the person has capacity to give consent to the treatment; and(b) the consent is in writing signed by the person.
(2) For subsection (1) (a) , the person has capacity to give consent to the treatment if the person has the ability to—(a) understand the nature and effect of a decision relating to the treatment; and(b) freely and voluntarily make the decision; and(c) communicate the decision.
(3) A person can give informed consent in an advance health directive.