Eligibility
Who Should Not Donate Blood Temporarily?
Deferral is protection — for you and the patient.
Short deferrals
Fever, cold or antibiotics: wait until fully recovered (usually 1–2 weeks after). Dental extraction: about 72 hours to a week. Alcohol in the last 24 hours: wait.
Longer deferrals
Tattoos/piercings: 6–12 months. Major surgery or blood transfusion received: usually 6–12 months. Pregnancy: through pregnancy and typically a year after delivery.
Permanent deferrals
Certain infections and conditions (e.g. HIV, hepatitis B/C, serious heart disease) permanently defer donation — screening exists to keep every unit safe.
Frequently asked questions
I was deferred once — am I out forever?
Usually not; most deferrals are temporary. Ask the blood bank when you can return.
Should I hide a deferral reason to help urgently?
Never — screening protects the patient receiving your blood.