National Health Act, 2003 (Act No. 61 of 2003)
Chapter 8 : Control of use of blood, blood products, tissue and gametes in humans
65. Revocation of donation
A donor may, prior to the transplantation of the relevant organ into the donee, revoke a donation in the same way in which it was made or, in the case of a donation by way of a will or other document, also by the intentional destruction of that will or document.