Illinois Statutes Chapter 210. Health Facilities and Regulation § 15/1. Blood donation and blood typing

(a) Any person 17 years of age or older may donate blood and have the blood typed, if the donation is completely voluntary, without the necessity of obtaining the permission or authorization of his or her parent or guardian.

(b) Any person 16 years of age may donate blood, if that person obtains written permission or authorization from his or her parent or guardian.

No donation shall be construed to be involuntary within the meaning of this Section solely because the donor receives a right to any lawful preference or special treatment of any kind in receiving blood in return for his donation.