Background: Range of motion (ROM) asymmetry between sides is one indicator of a positive neurodynamic test, but this has been less well studied for the ulnar nerve. Objective: The purpose of this study was to investigate side-to-side variation in elbow ROM during an ulnar neurodynamic test sequence, including contralateral cervical side°exion, in 40 asymptomatic subjects. Methods: A traditional goniometer was used to measure elbow°exion ROM at two end points, onset of resistance (R1) and symptom onset (P 1). Two repeated measures of R1 and P 1 were taken on each side. Results: Reliability for R1 and P 1 was found to be good (ICC ! 0:83, SEM 5:37) with no signi¯cant di®erence in mean ROM between sides. A signi¯cant relationship between sides was seen (r values ! 0:48) and R 2 values > 0:23; this indicates at least 23% of the variance observed in one limb was accounted for by range in the opposite limb. This relationship was slightly stronger for R1 than P 1. Lower bound scores indicate that intra-individual ROM di®erence > 23 for R1 and 22 for P 1 would exceed normal ROM asymmetry. Conclusion: These¯ndings provide clinicians with background information of ROM asymmetry during the ulnar neurodynamic test.