Ariz. Rev. Stat. § 36-849 – Manner of making, amending or revoking anatomical gift of decedent's body or part

A. A person who is authorized to make an anatomical gift pursuant to section 36-848 may make an anatomical gift by a document of gift signed by the person making the gift or by that person's oral communication that is electronically recorded or that is contemporaneously reduced to a record and that is signed by the individual receiving the oral communication.
B. Subject to the requirements of subsection C of this section, an anatomical gift by a person who is authorized pursuant to section 36-848 may be amended or revoked orally or in a record by any member of a prior class who is reasonably available. If more than one member of the prior class is reasonably available, the gift made by a person authorized pursuant to section 36-848 may be either:
1. 1. Amended only if a majority of the reasonably available members agree to the amending of the gift.
2. 2. Revoked only if a majority of the reasonably available members agree to the revoking of the gift or if they are equally divided as to whether to revoke the gift.
C. A revocation pursuant to subsection B of this section is effective only if, before an incision has been made to remove a part from the donor's body or before invasive procedures have begun to prepare the recipient, the procurement organization, transplant hospital, physician or technician knows of the revocation.