Positive ANA

A couple of weeks ago, I had my blood tested for autoimmune diseases or disorders that may be the cause of all of my pain. The doctor called and said that I tested positive on the ANA test which means that I may be at risk for getting lupus in the future. So tomorrow I am going in to participate in a study. They want to find out a way to more accurately determine if my positive test will result in lupus or not. I'm not too excited though because they want blood. I have horrible veins so I expect to be treated like a pin cushion. Hopefully it goes better then I am prepared for!