The characteristics of the blood may only be modified prior to collection for therapeutic use by a third party by a doctor within the Etablissement Français du Sang or the Armed Forces Blood Transfusion Centre.
This modification may only be carried out with the written consent of the donor, who has been warned in advance in writing of the risks involved and the possible consequences of the donation.
It may not be carried out on the persons mentioned in article L. 1221-5.