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OBJECTIVE	To develop a reliable and safe laryngeal nerve conduction technique and to obtain consistent parameters as normal reference values .
METHODS	A prospective single-arm study .
METHODS	A nerve conduction test was performed on the contralateral normal side in 42 patients with unilateral vocal fold palsy .
METHODS	The recording was performed in the intact thyroarytenoid muscle using a monopolar needle .
METHODS	The electrical stimulation using a 37-mm monopolar needle was applied 3 cm below the lower margin of the cricoid cartilage , just lateral to the trachea and medial to the carotid artery , and its intensity was gradually increased until the amplitude of the electrical response reached the maximum level .
METHODS	The latency of the evoked muscle response was acquired at the first evoked waveform deflection from the baseline .
RESULTS	The average latency of the recurrent laryngeal nerves was 1.980.26 ms. The latencies showed normal distribution according to the quantile-quantile plot and Kolmogorov-Smirnov test ( P = .098 ) .
RESULTS	There was no significant difference in latencies between the right and left recurrent laryngeal nerves .
RESULTS	Anthropometric factors including height and weight did not show any correlation with the latencies .
CONCLUSIONS	We developed a reliable and safe laryngeal nerve conduction technique and obtained normal reference values for the recurrent laryngeal nerve conduction study .
CONCLUSIONS	This laryngeal nerve conduction study can be an additional tool for detecting recurrent laryngeal nerve injury if it is performed in combination with the conventional laryngeal electromyography .
METHODS	4 .

