Our staff will talk with you about your health and travel experiences to determine if you are eligible to donate. The following are known reasons why you cannot donate blood: Have AIDS or have ever had a positive HIV test, Have a history of viral hepatitis at age 11 or older, Have EVER used needles to take any drugs not prescribed by your doctor, Are a male who has had sexual contact with another male, IN THE PAST TWELVE MONTHS, Have EVER taken money, drugs, or other payment for sex, Have had sexual contact IN THE PAST 12 MONTHS with anyone described above, Have had syphilis or gonorrhea IN THE PAST 12 MONTHS, Have been in juvenile detention, lockup, jail or prison for more than 72 consecutive hours IN THE PAST 12 MONTHS.