Sleep Apnea Test
Not everyone needs to take one. Sometimes they can tell when you're getting your medical clearances that you have a very thickened throat and palate that might indicate apnea. That's only one indicator.
My endocrinologist didn't refer me for one. I had a long wait for surgery and I noticed that I kept waking up with headaches and an extremely dry mouth. I got scared and asked my pcp for a referral for a sleep study. It turned out that I don't have a dangerous apnea. I have a c-pap that I used mainly so I didn't wake up with headaches and a super dry mouth. If you have a history of heavy snoring or you've been told you stop breathing in your sleep, then by all means you should have one done.
irene