Sorry posting here for advice please. Backwards and forwards to GP had some blood tests done but drawn a blank so far. I would like to test for b12 as it rubs in my family but dr has me labeled as stressed and not ill. He might be right but I would still like to get my levels checked. Looked at medicheck who would supply me with collection tube and you lance own finger. Wondering how easy this is? It works out at £39 but don't want to waste money if it will prove to tricky to do.