Real Ear Measurements (REM) are exactly what they sound like – measurements taken in a patient's ear in real-time. Real ear testing is used to assess hearing aid function in the ear canal. Often, REM is used during a hearing aid fitting to ensure appropriate and individualized hearing aid programming. It takes skill to test with REM.

No matter what kind of testing is used to fit a hearing aid, the skill of the person fitting the hearing instrument is extremely important. REM testing requires special equipment. Not every hearing aid 'fitter' invests in that equipment.

In most states the people licensed to fit hearing aids vary from people with high school diplomas to people with doctorate level degrees in audiology. (AuD) It's a bit crazy. Those without the AuD are generally referred to as Hearing Instrument Specialists (HIS). Some of the HIS have master's degrees.

Also, hearing aids vary. I, personally, am having trouble with a new hearing aid I'm trying. Most likely, I will return it and go back to the brand I was using. Testing it in real life during the trial period is extremely important. I know my audiologist will understand and will also let me try a different model if that makes sense. NOTE: I have worn hearing aids for over 40 years. I am bimodal with a cochlear implant on one side. My experience is extensive, but like everyone else I have to try out a new product and make certain it is right for me before purchasing it.