Needles are my middle name! I was on a daily injectable needle, plus another weekly needle for 5 years, self injected. Then monthly liver tests, meant blood draws monthly for about 15 years. One time, my arm was hurting after a blood draw, and I walked all the way from the hospital lab to my car in the parking lot, telling myself it was just a little hole, and it didn't hurt.
When I went to get my keys, my entire arm was covered with blood and it was running down onto my pants, as the little hole had failed to close. LOL After that, I paid more attention to care of the vein after giving my blood.
But I would not let anyone inject dye into my skin with a needle. That is a whole different level of masochism. It is one thing to take needles to get a disease under control, and another to let someone idly draw pics that are going to be there for a life time.
As for blood draws being pagan, that sounds much to JW to me! What the Bible is talking about is something totally different than getting blood to save your life.