You're doing it wrong.

If I'm injured and need a blood transfusion, where are paramedics most likely to go for the needle; is it the vein in my arm, same as for blood donation?

Wherever it is, if I get a tattoo noting my blood type, are you going to trust the tattoo and give me my blood type, or would you disregard it and go with O- just in case?

I'm getting some tattoo work done anyways, and I really like the idea of a Canadian Blood Services logo plus my blood type wherever paramedics would see it, but it's pointless if they won't believe it

I've been thinking about interesting observations about this job, and something I've noticed is that we all seem to have problems with boundary setting, which seems to often contribute to a lot of the problems we see.

I was just thinking about this.

Looking forward to seeing discussions from EMR. EMT, PCP, ACP, CCP and everyone interested in emergency medical care!