you should not give blood:
1 You've already given blood in the last 12 weeks (normally, you must wait 16 weeks).
2 You have a chesty cough, sore throat or active cold sore.
3 You're currently taking antibiotics or you have just finished a course within the last seven days.
4 You've had hepatitis or jaundice in the last 12 months.
5 You've had ear or body piercing or tattoos in the last 6 months.
6 You've had acupuncture in the last 6 months outside the NHS (unless you can produce the approved certificate from your acupuncturist or physiotherapist).
7 A member of your family (parent, brother, sister or child) has suffered with CJD (Creutzfeld-Jakob Disease).
8 You've ever received human pituitary extract (which was used in some growth hormone or fertility treatments before 1985).
9 You have received blood or think you may have received blood during the course of any medical treatment or procedure anywhere in the world since 1st January 1980.
you cannot give blood if:
1 You've had a serious illness or major surgery in the past or are currently on medication. Please discuss this with the clinical staff. The reason you're taking medicines may prevent you from donating.
2 You've had complicated dental work. Simple fillings are OK after 24 hours, as are simple extractions after 7 days.
3 You've been in contact with an infectious disease or have been given certain immunisations in the last four weeks.
4 You're presently on a hospital waiting list or undergoing medical tests.
5 You do not weigh over 50kgs (7st 12).