(Not a doctor, definitely not YOUR anything)

Does it say no sugar or no caffeine?

A bunch of stuff in this post piqued my attention. TIL some departments of transportation will require sleep apnea testing for a commercial driver’s license if the person meets certain criteria including being overweight.

Anyway I also did a decently deep dive into sleep study instructions like this one from The Cleveland Clinic I don’t see anything about sugary beverages in any of them. What I do see is a few things about alcohol and a looooot of stuff about caffeine. And I know if you were just listed coke, iced tea, lattes, monsters, etc your first thought might be sugar even though they’re all caffeinated too.

Either way you’re probably screwed because iced tea is also caffeinated but double check the specific instructions the place doing your sleep study gave you and their cutoff time because I’m seeing a bunch of different things on specific cutoff time, and I suspect it has to do with the clinic’s daily scheduled ‘bedtime routine’ timetable. Overall though it’s not so much of whether or not they’ll let you take it as much as there being good odds you just fail it.