Preparing for a sleep study (in-lab or home) helps ensure accurate results. How to prepare for sleep study involves both day-of preparation and avoiding factors that could affect results.
Before the study
- Maintain normal sleep schedule before study
- Avoid napping day of study
- No caffeine after noon
- No alcohol day of study
- Avoid sleep medications unless directed otherwise
- Continue regular medications unless told otherwise
- Wash hair without conditioner (for EEG attachment)
- Avoid hair products day of study
What to bring (in-lab)
- Comfortable pajamas
- Toiletries
- Reading material
- Phone charger
- Medications you take regularly
- List of current medications
- Insurance card and ID
- Pillow if you have a strong preference
What to expect (in-lab)
Standard arrival ~8-9 PM. Setup takes 1-2 hours:
- Multiple sensors attached (head, chest, legs, finger)
- Wires connected to recording equipment
- Brief calibration (open/close eyes, deep breaths)
- You sleep with sensors
- Tech monitors throughout night
Morning departure typically 6-7 AM.
What to expect (home)
- Pick up or receive device
- Apply at home before bed
- Sleep normally
- Return device
Common concerns
“I can’t sleep with all that equipment”: Most patients sleep adequately. Studies designed to capture even fragmented sleep.
“What if I don’t fall asleep”: Even partial sleep usually provides diagnostic information. Tech can help.
“What if I need bathroom”: Tech disconnects you briefly. Standard part of testing.
“Can my partner come”: No — single occupancy rooms standard.
Frequently Asked Questions
Should I take my sleep medication?
Generally not for diagnostic study. Discuss with sleep specialist.
What if I sleep on my stomach?
Adapt as needed. Side and back positions may give more useful data.
Can I drink water during the study?
Yes.
Will I get my CPAP that night?
Split-night studies titrate CPAP if OSA confirmed early. Otherwise, separate visit.
How accurate is one night?
Generally adequate. Some patients need additional studies.
The bottom line on sleep study preparation
Maintain normal routine. Avoid caffeine, alcohol, sleep meds. Bring comfort items. Trust the process — most patients sleep well enough for diagnosis.