NGF and spinal cord disorder: Urinary NGF mean value was 63.24 pg/ml (range 0–198 pg/ml) in 13/15 patients with spinal cord disorders without micturition problems (Table 3), the mean NGF/Creatinine ratio was 1.00 NGF/Crea (range 0–3.43 NGF/Crea) (Table 3).