Do you rotate arms?
Today I decided to use my right arm since I used my left Monday, for some reason I think that I need to give my veins a "break". Problem is, my right arm's vein hangs a left right after the crease in my arm. I warned the guy, he felt it and was confident he could do it. Went for it, the machine ran for about 3 minutes before beeping. He adjusted the needle several times, and finally asked if we can use the other arm. So far, only a few phlebs have been successful with this arm.
Do our veins need a break? Or is that just something I came up with?