I don't do well with blood draws, does anything help?

I need blood tests done for graduate school (ugh!) and I’m really distressed over it. I tolerate vaccines, but just barely. I’ve gone into full-blown hysterics when an IV has been attempted to be put in, to the point I’ve done everything to fight whoever is trying to put it in.

I don’t know what’s wrong with me but when they start tightening that band to put in an iv or draw blood my flight-or-fight response goes into overdrive. It’s like I am no longer in control and I will do anything to get away from that situation. I always have to be gased before surgery, as my attempts to handle the iv have gone terribly.

What am I going to do?

To clarify: I am not afraid of the results, and am moderately afraid of the pain, but not to the same level as my panic