What exact test check for whats going on besides ck testing ? I have a horrible muscle burn in my arms and my legs but i am not sure what the cause might be. i have had a decent amount of blood and urine test all come back negative. any 1 have any idea what test to ask for ? maybe something really thorough to check for all kinds of muscle burning and weakness. by the way i dont work out just walk and do normal things at the moment so its not from any hard work i am doing at the moment POTS GERD GILBERTS SYNDROME 1ST DEGREE AV BLOCK