“…However, the poor sensitivity and specificity of all currently available diagnostic tests for LPR has been highlighted by several review articles [Altman et al 2011;Katz et al 2013;Vaezi et al 2003]. In a population of patients with laryngoscopic findings of LPR, our group showed that MII-pH confirmed GERD diagnosis in less than 40% of patients [de Bortoli et al 2012], thus highlighting the critical issue of nonspecific symptoms and laryngoscopic findings of LPR [Zerbib and Stoll, 2010]. New promising diagnostic techniques have been developed for extraesophageal reflux syndromes, in particular, an immunologic pepsin assay (Peptest TM ), which has been shown to be a rapid, sensitive, and specific tool [Bardhan et al 2012;Samuels and Johnston, 2010], and a new pH pharyngeal catheter (manufactured by Restech, San Diego, CA, USA) that recent study documented as highly sensitive and minimally invasive device for the detection of liquid or vapors of acid reflux in the posterior oropharynx [Sun et al 2009].…”