How do I take a finger prick sample? Victoria 19 December 2019 15:12 Updated Take a look at our handy guide Related articles I’m worried I won’t be able to provide enough blood for a finger-prick sample What if I can’t fill the finger prick sample tube? Can I send my sample in a post box? Is a finger prick as effective as a venous blood draw? How long do my results take to come through? Comments 0 comments Article is closed for comments.