Which Diagnostic Test Is Commonly Used to Confirm the Diagnosis of ALS

Mr. Santos, a 55-year-old Male, Presents to the Neurology Clinic with Progressive Muscle Weakness and Difficulty Speaking. He Reports That These Symptoms Have Been Ongoing for the Past Few Months. on Physical Examination, the Nurse Notes Muscle Atrophy and Fasciculations. the Neurologist Suspects a Diagnosis of Amyotrophic Lateral Sclerosis (ALS) and Orders Further Diagnostic Tests