Table 2: Sensitivity and Specificity of Each Test in Diagnosis of Distal Axonal Sensory Polyneuropathy.

Sensitivity (%) Specificity (%)
Age-adjusted Sural SNAP 64 70
Age-adjusted Radial SNAP 33 85
SRAR 56 77
Sural SNAP < 5 53 83

SNAP: Sural and Radial Sensory Nerve Action Potential Amplitude
SRAR: Sural/Radial Nerve Amplitude Ratio