Figure 6From: Effects of sex hormones on bronchial reactivity during the menstrual cycle Testosterone levels in induced sputum samples from asthmatic patients. Sputum testosterone levels were significantly higher in the luteal phase when compared with levels measured in the follicular phase of the menstrual cycle. Data are mean ± SEM (n = 36). Follicular phase vs luteal phase; ***indicates P < 0.001.Back to article page