i would agree that always checking with anyone before any test whether or not it is okay to just take any particular medication is the way to go,always. i just wanted to mention AZ. becasue of just 'what' the specific nerve conduction test is really looking for,the muscle relaxers,even valium,from what my physiatirst told me,in no way would impede or change the results. the only thing that truely changes that muscle response is an obstruction or something actually impedding the actual flow which would not change with any muscle relaxer. it makes sense tho that one would think that,i mean i wondered. i did call before all my EMGs just to double check and the valium and my robaxin and my oxy were just ducky according to my phys. it is only because the test is checking the nerve flow to muscle and not the actual muscle itself that this is okay to do,you know what i am trying to say here? that particular part simply doesn't change with the muscle being relaxed in some way. you can relax your own muscles as well and it would not change the true flow to them. its just being tested at its very basic autonomic response level. this is one particular type of test that you really cannot 'change' the true results to from the outside,ya know what i mean? just a little factiod for ya. i think the muscle relaxer question is probably the MOST commonly asked one having to do with this particular type of test. only becasue you would "think"(common sense) it would change something, it just doesn't. so i will continue to medicate the liveing hell out of myself before every EMG,if i ever go there again,i doubt it after the last one,lol. Marcia