Erica,
My advice to you is to not go against your conscious, and work in an area where you do not have to give blood, Your co workers regardless of the fact, that they are educated to accept the religious and cultural ideas of others, will not. You will be the target of persecution and it’s not worth it. Go into an area where you do not have to deal with this issue. If you do decide to exercise your free will and give blood keep it to yourself, We all have to work out our own salvation with trembling,
Gladys