I have to agree with Sqad 100% here. I have to have a blood test at least twice a year, and until about 4 years ago there was never any problem; needle in, blood sucked out, job done. Suddenly for some reason it became rather difficult to find a vein and it might take 3 or 4 goes before success. At this point I must state that I am not obese; in fact my arms are so skinny that If I stand sideways they look skeletal. At one of my diabetic check-ups last year the surgery sister was unable to extract any blood after 5 attempts (which as you can imagine can be rather painful and stressful, so it did my BP readings no favours) so she called in my GP who tried with similar lack of success, eventually having to refer me, with many apologies, to the phlebotomy clinic at the local hospital. A few months later I was hospitalised for other reasons, which involved having blood samples taken every day. As you can imagine this was beginning to freak me out as the nurses probed, prodded and jabbed 4 or 5 times before getting a result. It got to the point that whenever I saw the blood nurse come on to the ward I would have a panic attack. One day a nurse of more mature years, almost like a caricature from a 1950s hospital comedy film came to my bed. I explained apologetically that she might have some difficulty like all the other nurses, to which she replied, "I won't!" Needle in, blood out, all in 20 secs. I fell in love with her at that point and insisted that she be the only one to take blood from me in the future. Apparently there is an art to it, and if you get a proper phlebotomy-trained nurse there is no problem. I know, however, how stressful it can be in the hands of a less experienced practitioner.