I recently had a routine appointment with my Parkinsons Nurse. I have gained quite a lot of weight, which is linked to the Requip I am taking. However, I have never had any tests for Parkinsons. I was given a few mobility tests and that was how I was diagnosed. However, this time the Nurse asked when I last had blood tests. I said never. So she is arranging with my GP to get these done. Has anyone had blood tests and what will they prove. if anything?