The Ultimate MSLT Sleep Study Guide: Preparation, Comfort Tips, and What to Expect

Preparing for a Multiple Sleep Latency Test (MSLT) can feel overwhelming. Whether you’re being evaluated for narcolepsy or another sleep disorder, knowing what to expect can significantly reduce anxiety and improve your overall experience. This comprehensive guide covers everything from packing essentials to managing caffeine withdrawal and removing those stubborn electrode gels afterward.

What is an MSLT and Why You Might Need One

The Multiple Sleep Latency Test is a daytime sleep study that measures how quickly you fall asleep in a quiet environment during the day. It’s typically performed following an overnight polysomnogram (PSG) and is considered the gold standard for diagnosing narcolepsy and evaluating excessive daytime sleepiness.

During an MSLT, you’ll be given multiple opportunities to nap throughout the day, usually at two-hour intervals. Technicians will monitor your brain waves, eye movements, muscle activity, and other physiological functions to assess how quickly you enter different sleep stages.

Free consultations available with select providers only.

Get a free consultation

And find an affordable, caring specialist.

Find a provider

Free consultations available with select providers only.

Preparing in the Weeks Before Your MSLT

Managing Caffeine Dependency

One of the biggest challenges patients face is adjusting caffeine consumption before the test. Most sleep centers require you to abstain from caffeine for 1-2 weeks prior to testing.

Gradual Reduction Strategy:

1. Two weeks before: Cut your usual caffeine intake by 25%
2. 10 days before: Reduce to 50% of normal intake
3. One week before: Drop to 25% of normal intake
4. 2-3 days before: Eliminate caffeine completely

This gradual approach helps minimize withdrawal symptoms like headaches and irritability that could affect your test results.

Caffeine Alternatives:

• Herbal teas (verify they’re caffeine-free)
• Decaffeinated coffee (still contains small amounts of caffeine, so use sparingly)
• Sparkling water with lemon or lime for a refreshing boost

Medication Considerations

Some medications can impact your sleep study results. Consult with both your referring doctor and the sleep center about:

• Which medications to continue taking
• Which ones should be temporarily discontinued
• The appropriate timeline for stopping certain medications

Your MSLT Packing List

What you bring can significantly impact your comfort during this day-long test. While policies vary between facilities, these items are generally recommended:

Essential Items

• Comfortable, loose-fitting pajamas or clothes for sleeping
• A change of daytime clothes
• Personal toiletries (toothbrush, toothpaste, face wash)
• Prescription medications in original containers
• Insurance cards and identification

Comfort Enhancers

• Your own pillow with a colored pillowcase (to distinguish it from facility pillows)
• A light blanket if you prefer your own
• Shower supplies for after the test (including products for removing electrode paste)
• Entertainment for between naps (book, tablet, etc.)
• Snacks that won’t interfere with testing (check facility policies)

Pro Tip: At Klarity Health, we understand that familiar items can help patients feel more at ease during sleep studies. Our facilities typically allow patients to bring personal comfort items to improve test experiences while ensuring accurate diagnostic results.

The Day Before Your MSLT

Sleep Schedule Preparation

• Maintain your regular sleep schedule for 1-2 weeks prior to testing
• Avoid napping the day before
• Keep a sleep diary if requested by your doctor
• Plan your transportation to and from the facility

What Not to Do

• Consume alcohol, which can disrupt sleep architecture
• Use sleep aids unless specifically approved by your doctor
• Exercise vigorously late in the day
• Eat heavy meals close to bedtime

During Your Sleep Study: What to Expect

Overnight Polysomnogram

Most MSLTs begin with an overnight sleep study. During this process:

1. Technicians will apply electrodes to your scalp, face, chest, and legs
2. These are attached with special adhesives or pastes
3. You’ll be connected to monitoring equipment
4. The room will be darkened for sleep

The MSLT Portion

Following the overnight study:

1. You’ll have breakfast (typically caffeine-free)
2. You’ll have 4-5 scheduled nap opportunities (usually 20 minutes each)
3. Between naps, you’ll need to stay awake in a lighted room
4. The entire test typically concludes by mid-afternoon

Facility Differences: What Varies Between Sleep Centers

Sleep study experiences can differ significantly between facilities. Here’s what might vary:

After Your Sleep Study: The Cleanup

Electrode Gel Removal Tips

The adhesive paste used to attach electrodes can be stubborn to remove. Try these methods:

1. Oil-based products: Baby oil, coconut oil, or olive oil can break down the adhesive
2. Specialized removers: Products like ‘Detachol’ or ‘Goo Gone’ (avoid contact with eyes)
3. Dawn dish soap: Particularly effective when combined with warm water
4. Baking soda paste: Mix with water and gently massage into hair

Post-Test Self-Care

• Resume your normal routine, including caffeine if desired
• Note any unusual symptoms to report to your doctor
• Schedule a follow-up appointment to discuss results

Managing Test Anxiety

Many patients experience anxiety about sleep testing. Consider these approaches:

• Request a tour of the sleep facility before your test date
• Bring familiar items from home to create comfort
• Practice relaxation techniques like deep breathing
• Remember that technicians understand your concerns

At Klarity Health, our sleep specialists work closely with patients to address concerns before testing. We offer transparent pricing for both insurance and self-pay options, making the process as stress-free as possible.

Final Thoughts and Next Steps

While sleep studies may seem intimidating, they provide invaluable information about your sleep health. The diagnostic insights from an MSLT can lead to effective treatment plans for conditions like narcolepsy and other sleep disorders.

If you’re experiencing excessive daytime sleepiness or other sleep-related concerns, consider reaching out to sleep specialists who can determine if an MSLT might be appropriate for your situation. With the right preparation, your sleep study can be a comfortable and productive experience that leads to better sleep health.

Have you undergone a sleep study before? What tips would you share with others preparing for their first MSLT? Let us know in the comments below!

Frequently Asked Questions

How long does an MSLT typically last?

An MSLT usually takes a full day, beginning early morning after an overnight sleep study and concluding by mid-afternoon.

Will I be able to use the bathroom during the test?

Yes, you can use the bathroom between nap opportunities. Just inform the technician.

How soon will I receive my results?

Results typically take 1-2 weeks as they require physician interpretation. Your doctor will schedule a follow-up appointment to discuss findings.

Can I bring my CPAP if I already use one?

Yes, if you’re a CPAP user, you should bring your equipment. The technicians will incorporate it into the testing process.