Mississippi Code Title 41. Public Health § 41-41-15

(1) The legal disabilities of any minor aged sixteen (16) years or older are removed for purposes of voluntarily donating blood, with or without remuneration therefor, to a licensed hospital, blood bank, community blood program, or other lawful activity engaged in processing and supplying human blood for transfusions and/or related medical purposes, as provided in this section.

(2) Any person who is sixteen (16) years of age or older may consent to the donation of his or her blood and to the penetration of such tissue necessary to accomplish the donation, if the person obtains written permission from the person's parent or guardian. The consent shall not be subject to deferments because of the minority of the person.

(3) Any person who is seventeen (17) years of age or older may consent to the donation of his or her blood and to the penetration of such tissue necessary to accomplish the donation. The consent shall not be subject to deferments because of the minority of the person, and parental authorization shall not be required to authorize the donation and penetration of tissue.