Drs. opioion on Second Opinions w/ALS
This forum is for questions and support regarding neurology issues such as:
Alzheimer's Disease,
ALS,
Autism, Brain Cancer,
Cerebral Palsy, Chronic Pain,
Epilepsy,
Fibromyalgia, Headaches, MS, Neuralgia, Neuropathy, Parkinson's Disease, RSD, Sleep Disorders,
Stroke, Traumatic Brain Injury

EMG is typically good at diagnosing ALS and should not mistaken it for anything else. Muscle biopsy would not diagnose ALS but would rather be consistent with a disease "beyond muscle" -- they could probably put it under the umbrella of "neuropathies" even though the actual problem lies much higher (such as spinal cord). Therefore, your muscle biopsy, could still be consistent with ALS.
Hope you get a helpful second opinion from Cleveland. Depending on where you are, Columbia Univ. in NYC has an ALS clinic as well where they could both, diagnose you and treat you as well as provide you with any experimental treatments that may be out there.