Nevner at nevrodynamiske tester også har «false positive» resultater, som man må være oppmerksom på. Ca.33% av alle uten problemer vil likevel få positive resultater på nervestrekk-tester. Så som alle andre diagnoser vi prøver å sette på menneskekroppen, er heller ikke nevrodynamikk spesielt spesifikk, pålitelig eller objektiv.
The purpose of this investigation was to determine the false positive rate of the seated slump test (SST) and the upper limb tension test (ULNTT) in a sample of healthy adults without spine or peripheral symptoms. The false positive rate was found to be high for both the SST (33.3%) and the ULNTT (86.9%), which raises question about the diagnostic validity of these tests as previously described using full-range knee and elbow testing. Based on the results of this investigation, it appears that there is a significant degree of inherent neural sensitivity among healthy adults without a history of spinal or peripheral symptoms when full-range testing is performed. To increase the diagnostic accuracy of these tests, we have proposed possible cut-off scores for these tests. Based on the 75th percentile, we suggest that a positive test only be identified when peripheral symptoms are reproduced before 22° of knee extension in the SST and 60° of elbow extension in the ULNTT.