(1) Subject to section 10108, a donor or other person authorized to make an anatomical gift under section 10104 may amend or revoke an anatomical gift by any of the following means:

    (a) A record signed by any of the following:

    (i) The donor.

    (ii) The other person authorized to make an anatomical gift under section 10104.

    (iii) Subject to subsection (2), another individual acting at the direction of the donor or the other person authorized to make an anatomical gift under section 10104 if the donor or other person is physically unable to sign.

    (b) A later-executed document of gift that amends or revokes a previous anatomical gift or portion of an anatomical gift, either expressly or by inconsistency.

    (2) A record signed pursuant to subsection (1)(a)(iii) shall meet all of the following requirements:

    (a) Be witnessed by at least 2 adults, at least 1 of whom is a disinterested witness, who have signed at the request of the donor or the other person.

    (b) State that it has been signed and witnessed as provided in subdivision (a).

    (3) Subject to section 10108, a donor or other person authorized to make an anatomical gift under section 10104 may revoke an anatomical gift by the destruction or cancellation of the document of gift, or the portion of the document of gift used to make the gift, with the intent to revoke the gift.

    (4) A donor may amend or revoke an anatomical gift that was not made in a will by any form of communication during a terminal illness or injury addressed to at least 2 adults, at least 1 of whom is a disinterested witness.

    (5) A donor who makes an anatomical gift in a will may amend or revoke the gift in the manner provided for amendment or revocation of wills or as provided in subsection (1).