Nerve conduction study results show a demyelinating polyneuropathy in keeping with AIDP.
| Nerve conduction study results | ||||
| Nerve | Latency (ms) | Amplitude (mV) | Conduction velocities (m/s) | F latency (ms) |
| Motor | ||||
| Medianus motor right | ||||
| Wrist—APB | 3.95 | 8.9 | 50 | 32 |
| Elbow—wrist | 8.9 | 8.5 | ||
| Ulnaris motor right | ||||
| Wrist—ADM | 2.9 | 7.0 | ||
| Below elbow—wrist | 14.0 | 6.3 | 52 | 29 |
| Tibialis motor right | ||||
| Ankle—abductor hallucis | 4.1 | 2 D* | Absent | |
| Tibialis motor left | ||||
| Ankle—abductor hallucis | 4.25 | 1.6 D* | ||
| Peroneus motor right | ||||
| Ankle—EDB | 13.3 | 2.7 | ||
| Fibular head—ankle | 21.7 | 2.6 | 46 | 78 |
| Peroneus motor left | ||||
| Ankle—EDB | 10.9 | 2.2 | ||
| Fibular head—ankle | 21.6 | 2.2 | 38 | |
| Sensory | ||||
| Medianus sensory right | ||||
| Dig II—wrist | 2.5 | 4.1 | 51 | |
| Dig III—wrist | 2.6 | 3.1 | 50 | |
| Ulnaris sensory right | ||||
| Dig V—wrist | 2.1 | 3.4 | 51 | |
| Radialis sensory right | ||||
| Forearm—first web space | 1.4 | 24 | 59 | |
| Peroneus superficialis sensory right | ||||
| Mid calf—anterior ankle | 2 | 6 | 44 | |
| Suralis sensory right | ||||
| Mid calf—anterior ankle | 1.9 | 5 | 51 | |
Abnormal responses shown in bold type.
ADM, abductor digiti minimi; APB, abductor pollicis brevis; D, dispersed; Dig, digit; EDB, extensor digitorum brevis.