Overview A Study to Evaluate the Sensitivity and Specificity of Inhaled Methacholine in Bronchial Provocation Test Status: Not yet recruiting Trial end date: 2023-06-01 Target enrollment: Participant gender: Summary A multicenter, open-label study to evaluate the sensitivity and specificity of inhaled methacholine in bronchial provocation test Phase: N/A Details Lead Sponsor: Chia Tai Tianqing Pharmaceutical Group Co., Ltd.Treatments: Methacholine Chloride