Medicine All of the following are true regarding CSF abnormalities in multiple sclerosis except? A CSF protein concentration is more than 100 mg/dl B CSF IgG index express ratio of IgG to albumin in CSF divided by the same ration in serum C Oligoclonal bands may be absent at onset of multiple sclerosis D Number of oligoclonal bands increase with time 💡 Explanation All of the following are true regarding CSF abnormalities in multiple sclerosis except? ✓ Correct Answer: A. CSF protein concentration is more than 100 mg/dl