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Hi Can only go on what I do. I perform audio without a booth and I believe the external noise has to be below 35 db for it to be valid. Regarding spiro I do 3 on each test. Hope that helps you a little but sure more off the list will give further advice Karen -----Original Message----- From: Doleen Birchwood Sent: 25 Mar 2013 17:40:13 GMT To: [log in to unmask] Subject: [OCC-HEALTH] audiometry Hi List, Can someone guide me to credible information about audiometry? I am particularly interested in finding out if audiometric test can be done without a booth-what are the currrent guidelines in this matter. if so what doe the result mean ethically and professional accountability taken into consideration. Second, i am interested in finding out what should be the acceptable level reference value for spirometry (FEV1/FVC). how many blows does a client have to do and is it 3 together and how any should be force and slow. Is it acceptable to do all 3 forced blow or should there be forced and slow blows. Thank you in advance! ******************************** Please remove this footer before replying. OCC-HEALTH ARCHIVES: http://www.jiscmail.ac.uk/lists/occ-health.html CONFERENCES AND STUDY DAYS: http://www.jiscmail.ac.uk/cgi-bin/filearea.cgi?LMGT1=OCC-HEALTH ******************************** Please remove this footer before replying. OCC-HEALTH ARCHIVES: http://www.jiscmail.ac.uk/lists/occ-health.html CONFERENCES AND STUDY DAYS: http://www.jiscmail.ac.uk/cgi-bin/filearea.cgi?LMGT1=OCC-HEALTH