This is a diagnostic study. Every patient will undertake Neuropad test, inculding the visual and quantitative screening tests. The visual screening test includes whether the Neuropad test paper changes completely from blue to pink within 10 minutes (visual screening test a) and the time to complete color change (visual screening test b). the quantitative screening test using a handheld color scanner to scan the rate of color change, which estimated by the slope of the Neuropad color change per minute. The visual and quantitative screening tests were compared when the Neuropathy Disability Score (NDS) and the Neurological Symptom Score (NSS) combined score as diagnostic criteria.
This study aimed to evaluate the diagnostic vaule of quantitative Neuropad for diabetic peripheral neuropathy