Welcome @kirbyukat, I have small fiber PN but haven't had the lumbar puncture but I did find this information that might provide some answers.

"Approximately 90 % of patients with CIDP demonstrate elevated CSF protein (greater than 45 mg/dL) (62-64). CSF pleocytosis is not typically seen, and often suggests a co-infection, such as HIV (65)."
--- Chronic Inflammatory Demyelinating Polyradiculoneuropathy: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4845954/

Have you started any treatments?