Ala. Code § 26-1-3.1: Blood Donations by Persons 17 or Older; Blood Donations by Persons 16 Years of Age; Blood or Plasma Donations by Persons 18 or Older.

(a) A person who is 17 years of age or older may consent to donate blood in a voluntary and noncompensatory blood donation program without the permission of a parent or guardian. The consent is not subject to later disaffirmance because of minority.

(b) A person who is 16 years of age may donate blood in a voluntary and noncompensatory blood donation program if the person obtains written permission from the person’s parent or guardian.

(c) A person 18 years of age or older may consent to donate blood or plasma without the permission of a parent or guardian. The consent is not subject to later disaffirmance because of minority.