diagnosis of hearing loss diagnosis of hearing loss identification of a hearing loss is usually conducted by a general practitioner medical doctor, otolaryngologist, certified and licensed audiologist, school or industrial audiometrist, or other audiometric technician. diagnosis of the cause of a hearing loss is carried out by a specialist physician (audiovestibular physician) or otorhinolaryngologist. an audiologist conducting an audiometric hearing test in a sound-proof testing booth difference between subjective and objective hearing test . subjective: 1 . require child / parents participation & co - operation 2. informal assessment . 3. measure overall function ability 4. depends on behavioural techniques. objective 1. don't require patient's. participation . 2 formal test . 3. defines a patient's hearing ability , how well ear work 4. depends on an autonomic physiologic response case history a case history (usually a written form, with questionnaire) can provide valuable information about the context of the hearing loss, and indicate what kind of diagnostic procedures to employ. case history will include such items as: major concern birth and pregnancy information medical history development history family history workplace environment home environment examination otoscopy, visual examination of the outer ear, ear canal, eardrum, and middle ear (through the translucent eardrum) using an optical instrument inserted into the ear canal called an otoscope tympanometry differential testing – the weber, rinne, bing and schwabach tests are simple manual tests of auditory function conducted with a low frequency (usually 512 hz) tuning fork that can provide a quick indication of type of hearing loss: unilateral/bilateral, conductive, or other laboratory testing in case of infection or inflammation, blood or other body fluids may be submitted for laboratory analysis. hearing tests