I had TOS surgery in 2000.

They did a EMG on me and they don't normally show a thing.

My TOS Dr. is Dr. Sanders in Denver. I saw the ones at the Vascular Institute first and they diagnosed me with TOS but Dr. Sanders ended up doing my surgery.

There is a test but I don't remember the name of it. It's where you bend your hands at the elbow and hold your hands up in the air and open and close them. This usually brings on the symptoms. You won't be able to do it for long. I always left those places in more pain then I went in. Dr. Sanders don't mess around though. I went back to that one place so many times I think I paid for their building. In the end they sent me to Dr. Sanders for my surgery.I won't say why but I was sooooo glad he did my surgery. Also they check the grip of your hand. My right one is so weak I can't do anything with it accept type. LOL

If you think you have TOS I would look for a good TOS specialist in your area. I saw 2 Neurolgist that didn't believe in TOS so I don't recommend going to one of them.

Maybe Jo can tell you how she was diagnosed. There might me more new ways then when I was diagnosed.

Hope this helps some.

Ada