You cannot donate blood if you have any of the following conditions:

• Heart or lung disease (those with asymptomatic asthma can still give blood);
• Previous or current history of cancer;
• High blood pressure and taking medication (except diuretics);
• Diabetes and taking medication;
• Abnormal bleeding tendencies or blood disorder;
• AIDS or symptoms of AIDS, such as unexplained fevers, severe night sweats, unexpected weight loss, swollen glands or chronic diarrhoea;
• Uncontrolled seizures after infancy;
• Hepatitis B or C;
• Syphilis;
• Malaria; or
• Underwent major surgery 6 to 12 months ago.