They used to be able to use the butterfly needles on me. Those don't even seem to even work any more. I have Raynauds along with my migraines. That has caused most of the veins that they always could get in my hands, well they have all gone. My veins are very small and buried deep, to begin with. The tricks with heating pads do not seam to work anymore, my veins are getting worse. This may be a little over the top, but this is what they did for me. They just brought in the ultrasound machine. There is a doctor that just took special training for it, within a few short minutes they had all the blood they wanted. They gave me a bit of lidocain before they began cause they had to go really deep. It was way better than having the techs/nurses go digging for the veins.