We conducted a standardized clinical and ultrasonographic assessment of patients with CIDP at both Wake Forest Baptist Medical Center, NC (October to November 2017) and Austin Health, Melbourne, Australia (July 2018 to current). Our protocol focused on bilateral whole length assessment of the median and ulnar nerves, with unilateral assessment of radial, tibial, fibular and sural nerves. Correlation of clinical (disease duration, current clinical state, treatment history), electrodiagnostic (from most recent test) and ultrasound findings (in particular nerve size as measured by cross sectional area) was undertaken. 25 patients were studied at WFBMC neurodiagnostic laboratory, with data collection continuing at Austin Health.