Why do I have to answer so many questions when becoming a member?

When you need blood, you want to be sure that this blood is actually what you expect: problem-free blood from a healthy unvaccinated person. One of the ways we ensure this is by having you answer all the relevant questions. However, there are only a few mandatory fields – if you don’t want to fill in any information (or don’t know what applies to you) just leave the relevant fields blank.