TY - JOUR T1 - Audit of a new mannitol challenge testing service in a UK tertiary centre JF - European Respiratory Journal JO - Eur Respir J VL - 38 IS - Suppl 55 SP - p934 AU - Martyn Bucknall Y1 - 2011/09/01 UR - http://erj.ersjournals.com/content/38/Suppl_55/p934.abstract N2 - Guys and St Thomas' NHS Foundation trust (GSTT) is a tertiary hospital based in London, UK, offering specialist allergy and asthma clinics.In July 2010, GSTT switched from using histamine to mannitol for performing bronchial challenge testing (BCT). BCT is an essential diagnostic investigation for identifying/excluding asthma and monitoring responses to treatment regiimes.We performed an audit of the new service, using mannitol between July 2010 and February 2011. We looked at patient demographics, (age, sex, baseline lung function), test outcomes (i.e. positive, negative, reasons for terminating test, fall in FEV1), sources of referral and clinical rweasons for referral to our laboratory.Table 1 shows patient demographics and baseline lung function. 60 patients were referred to the service (28M, 32F). The mean age was 40.2 yrs.View this table:Table 1. Patient demographicsTable 2 shows source of referral and reason for referral.View this table:Table 2. Source of referral ER -