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What to Expect

Here's what you can expect if you have an overnight appointment for a sleep study

Please read the following information carefully in order to assure the best test and treatment possible. 

When you arrive at night

Night hours for the Sleep Disorders Center start at 8 p.m. When you arrive, the technologist will ask you to complete some paperwork and escort you to your private room. Please let our technologist know if you need to leave by a certain time in the morning.

The technologist will apply about 25 monitoring electrodes to your head and body, as well as other monitoring devices. These devices monitor: breathing, respiratory effort, snoring, oxygen level in the blood, brain electrical activity, electrical activity signaling eye movements, muscle electrical activity, and heart electrical activity. The electrodes are held in place with a paste that will require shampoo in the morning to remove. This entire preparation time for the test typically takes about 30-45 minutes. After that, you are free to read, watch TV, or just relax in your room until bedtime.

Concluding your test in the morning

The conclusion of your test depends on what we see during the night. Once your test has been completed the following morning, you will be free to leave about 30 minutes later. Private shower facilities are available for your use in the morning. Each private shower/rest room serves two patient rooms. If you must leave by a certain time, we will do our best to honor your schedule, but please allow sufficient time so we may make your test as thorough as possible. If you absolutely must leave by a certain time, please discuss this with us at 314.996.8680 before your test.


Please give 48 hours notice if unable to keep your appointment. This will allow us to serve others more promptly.

Instructions for the Sleep Study Patients

  • You may eat your normal meals before testing.
  • Do not drink caffeinated beverages (coffee, tea, chocolate, colas and many other soft drinks) after 2 p.m. on the day of your test.
  • Smoking and other tobacco products are not permitted on our campus.
  • Please do not drink alcohol the day of your test unless instructed differently by your doctor.
  • Take your usual medications at the usual times, unless instructed differently by your doctor.  

Night Hours 

Night hours for the sleep lab start at 8 p.m. For your safety, the door is locked so please use the buzzer to alert the staff that you are there.

Finding the Building

The Sleep Disorders Center is located at 969 N. Mason Rd.. From North Mason Road, turn west onto Executive Parkway Drive. Turn left (south) at first intersection. Proceed to Medical Office Building 969, free parking is available on the surface lot near entrance B. 

Enter entrance B. Inside the first set of double doors press the intercom button on the right wall to inform the technologist of your arrival and be buzzed in. Take the elevator or stairs to the second floor and go to Suite 260. 

Office Locations at Barnes-Jewish West County Hospital

Sleep Medicine Center, BJC Medical Group Physicians
969 N. Mason Road, Suite 250
Medical Office Building 969
Creve Coeur, MO 63141

Sleep and Electroencephalogram (EEG) Lab, BJC HealthCare
969 N. Mason Road, Suite 260

Barnes-Jewish West County Hospital is conveniently located just one mile west of I-270 in Creve Coeur, Missouri — a west county suburb of St. Louis.

Get directions and maps.

Contact Us

Physician appointment changes or cancellations should be submitted through MyChart, or by calling your physician office directly.

For immediate assistance or to schedule an appointment with one of our sleep specialists, please call 314.996.8680.

Find additional phone numbers here.


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Find a doctor or make an appointment: 314.542.WEST (9378) OR TOLL-FREE 1.844.542.9378
General Information: (314) 996.8000
12634 Olive Boulevard
Creve Coeur, Missouri 63141
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