What You Need To Know About ALS – Causes, Symptoms, Treatment Urine and Blood Tests Source:http://www.iwannaknow.org/ Analyzing samples of your urine and blood in the laboratory may help eliminate other causes of your symptoms. This is the simplest diagnostic exam given. Prev Next Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27