No abstract available. Article truncated after first page. A 50 year old female is being evaluated at the Sleep Clinic for difficulty falling asleep. She reports having unpleasant sensation in her legs causing an urge to move when she lies down to go to sleep. She feels better when she gets up and walks around. She is a restless sleeper and usually finds her bed-sheets on the floor in the morning. She does not have any other medical history. Her physical exam is normal. Which of the following studies would be most helpful in diagnosis and management of this patient?1. Nerve conduction study2. Nocturnal polysomnography (PSG)3. Serum ferritin level4. Suggested immobilization test (SIT)….