If it was a scene prop, I think it's possible. But I don't think that if you were to swing at someone by a wall and have their blood splatter on it, as far as I know that's not possible.
What I'm trying to say if that didn't make sense is that you can't have blood splatter onto walls/ground in real time and have it stay.
(Correct me if I'm wrong, I'm not 100% sure)
Edit: More blood on people is possible though, I think that I've seen it in a mod. I'm not sure how to do it though.