Bloodbot the mechanical vampire

Some of us just have a huge phobia of needles, and even when you have the hottest looking nurse looking after you, any jab will still induce unimaginable pain. Enter the Bloodbot which will use a needle and a probe to locate a vein, where hopefully the developers are able to improve upon its 78% accuracy rate which might be higher than freshies out of medical school. What happens to the remaining 22%? Will it result in you gaining a new phobia of robots in the process?