Because your blood group is O RhD negative, it is very special indeed.
It can be given to anyone. That means your blood is the only safe option when a patient's blood group is unknown or not immediately available - such as in emergencies, or in the case of specialised procedures for unborn babies.
So you can be absolutely certain that you are helping save people's lives.
Female donors can give blood three times a year and male donors can give blood four times a year. So please be sure to keep up your outstanding work and donate regularly if you possibly can.
Our session search will find every public blood donation session in your area:
There are many ways we can help you:
Nisa Karia, 30, was diagnosed with thalassaemia major when she was just five months old...