How to Start CPAP Treatment in Japan: From Sleep Testing to Home Delivery

“I think I may have sleep apnea, and I want to start CPAP as soon as possible.” “I want to know how many days it actually takes from my first visit until CPAP arrives at my home.” Many patients feel this way.
CPAP therapy is not something anyone can start on the day they are first seen. To begin insured CPAP rental, a sleep test must first be carried out to check how often breathing stops or becomes shallow during sleep and to measure blood oxygen levels, so that a physician can make a medical determination of whether CPAP is appropriate.
That said, the number of days needed to start treatment varies greatly depending on the clinic’s testing system, how results are explained, and how well the clinic coordinates with the CPAP supplier.
At Ueno Snoring Clinic, once an at-home sleep test has been carried out, we can explain the results in as little as 3 days if conditions allow. If you are found to be a candidate for CPAP and complete the setup process after the results explanation, your CPAP device may be delivered to your home the next day or the day after.
That said, the number of days can vary depending on when the testing device is shipped and carried out, how quickly it is returned, holidays, the quality of the recorded data, and the CPAP supplier’s delivery area. The “fastest” timeline described in this article is a benchmark for when every step goes smoothly.
In this article, a physician explains in detail the actual process from your first visit, through the at-home sleep test and results explanation, to the start of CPAP rental — along with tips for starting treatment as quickly as possible.
Ueno Snoring Clinic offers insured sleep testing and CPAP management, as well as self-pay snoring laser treatment, tailored to each patient’s condition. If you would like to find out which treatment is right for you, please start with a first consultation.
Details of the examinations and treatments available at Ueno Snoring Clinic are available here

A Complete Comparison of CPAP Masks

We tried on and reviewed five different types of CPAP masks. 90% of CPAP comfort comes down to the mask.

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A detailed explanation of how to use CPAP, including a real demonstration of what it feels like to wear the device.

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We were featured on Fuji TV’s “Live News It!” and introduced on FNN Prime Online

You can watch our examinations and explanations of sleep disorders, snoring, and sleep apnea from Ueno Snoring Clinic.

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Ueno Snoring Clinic was featured in an article on NTV’s “news every.”

Please use this as an opportunity to consider seeing a doctor or getting tested for snoring, sleep apnea, and sleep disorders.

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Reviewed by the Director

Kazuyuki Sugaya, MD

Director / Anesthesiologist, Ueno Snoring Clinic

With experience in over 20,000 cases of general anesthesia, our director specializes in the diagnosis and treatment of snoring and sleep apnea, providing treatment tailored to each patient. Ueno Snoring Clinic (insurance-covered care)

This article has been reviewed by Director Kazuyuki Sugaya and provides accurate medical information on how many days it takes from your first visit through the sleep test, results explanation, and the start of CPAP rental, along with the fastest possible pathway.

How Many Days Does It Take from Your First Visit to the Start of CPAP Rental?

The number of days needed to start CPAP rental depends on the testing method, how the testing device is received, how many days the results take to analyze, results-explanation appointment availability, and the CPAP supplier’s delivery system.
In general, the following steps are required.

1. First visit to the clinic
2. The doctor reviews your symptoms and medical history
3. An at-home sleep test is carried out
4. The testing device or test data is collected
5. The test results are analyzed
6. The doctor explains the results to you
7. CPAP eligibility is determined
8. The CPAP supplier prepares and ships the device
9. CPAP treatment begins at home

At some clinics, it can take one to two weeks or more from the first visit to the results explanation, and CPAP delivery can take several additional days after that.
At Ueno Snoring Clinic, we streamline sleep testing, results explanations, and coordination with the CPAP supplier as much as possible, so that patients who need treatment are not kept waiting for long periods.

Ueno Snoring Clinic’s Fastest Steps

To start CPAP as quickly as possible, it is important to move through each step without delay.

Step 1. Reviewing Your Symptoms and Treatment History at Your First Visit

At your first visit, we check for snoring or apnea noticed by others, daytime sleepiness, morning headaches, nighttime urination, high blood pressure, and weight changes.
If you have already had a sleep test at another clinic, or have used CPAP before, having your past test results or medical records with you can make the evaluation smoother.
At your first visit, we mainly check the following:

• Whether you have loud snoring
• Whether anyone has noticed you stop breathing or gasp during sleep
• Daytime sleepiness or reduced concentration
• Morning headaches or dry mouth
• A history of high blood pressure, diabetes, or heart disease
• Height, weight, BMI, and neck circumference
• Any past sleep tests or CPAP use
• The effects of nasal congestion, alcohol, or sleeping medication

If the examination suggests sleep apnea, we will arrange an at-home sleep test for you.

Step 2. Carrying Out an At-Home Sleep Test

The sleep test is carried out at home, while you sleep under conditions close to your normal routine.
You wear the testing device, which records your breathing, snoring, blood oxygen level, and pulse during sleep. The test itself is usually completed in a single night.
For an accurate analysis, it is important to attach the sensors correctly and record for a sufficient length of time.
On the day of the test, please keep the following in mind:

• Attach the sensors according to the instructions
• Go to bed at around your usual bedtime
• Reattach any sensor that comes loose
• Avoid heavy drinking before bed
• Return the device promptly according to the instructions after the test is finished

If you delay carrying out the test after receiving the device, the results explanation and the start of CPAP will be delayed by the same amount of time. If you want to start treatment quickly, we recommend carrying out the test the day the device arrives, or as soon as possible thereafter.

Step 3. Results Available as Soon as 3 Days After Testing

At Ueno Snoring Clinic, when the test data is captured without problems and the analysis process goes smoothly, we can explain your results as soon as 3 days after the test is carried out.
The results allow us to check the frequency of apnea and hypopnea events, drops in blood oxygen level, and snoring.
A simplified test generally uses a respiratory event index to assess the likelihood and severity of sleep apnea.
However, because a simplified test is scored based on recording time rather than actual sleep time, results can sometimes appear milder than the symptoms suggest. If the simplified test results are not conclusive, a more detailed polysomnography (PSG) test may be needed.

Step 4. Coming In for a Results Explanation

Once your results are ready, you will come to the clinic and the doctor will explain them in person.
Rather than looking only at the number of apnea and hypopnea events, we consider daytime sleepiness, related conditions such as high blood pressure, obesity, nasal congestion, and lifestyle factors when determining your treatment plan.
If you are found to be a candidate for CPAP, we will explain the purpose of treatment, how to use the device, mask fitting, and follow-up visits, and proceed with the CPAP rental paperwork.

Step 5. Starting the CPAP Rental Process If You Qualify

If the test results indicate you are a candidate for CPAP therapy, the doctor will explain the process of starting CPAP.
CPAP is a treatment in which you wear a mask during sleep while the device delivers air at a set pressure, keeping your airway from collapsing.
To rent CPAP under insurance, your test results must meet certain criteria, and the doctor must determine that treatment is medically necessary.
Once you are approved for CPAP, we will explain how to use the device, how to fit the mask, day-to-day management, and follow-up visits, and then request setup from the CPAP supplier.

Step 6. Delivery to Your Home the Next Day or the Day After the Results Explanation

At Ueno Snoring Clinic, when CPAP is approved after the results explanation and coordination with the supplier goes smoothly, the device can be delivered to your home the next day or the day after.
You can begin CPAP treatment at home on the day the device arrives.
That said, the delivery date can vary based on the following:

• The time of day you received the results explanation
• Delivery conditions on Saturdays, Sundays, and holidays
• The CPAP supplier’s inventory and order cut-off times
• Your place of residence
• Whether mask selection or individual adjustment is needed
• Weather or traffic conditions

“The next day or the day after” is not a guaranteed delivery date for every patient. If you are in a hurry to start treatment, please let us know at the time of your results explanation.

At the Fastest, How Many Days After Your First Visit Can You Start CPAP?

The actual number of days depends on when you receive the testing device after your first visit and when you are able to carry out the test.
If the testing device arrives quickly, you carry out the test right away, and the data analysis and results explanation proceed smoothly, the following timeline is possible:

So, if you receive the testing device quickly after your first visit and are able to carry out the test right away, you can move on to CPAP treatment in a relatively short period.
That said, this does not mean CPAP is guaranteed to arrive 4–5 days after your first visit. Because shipping time for the testing device is also required, the total number of days from your first visit will vary depending on your area and the day of the week.

What Can Patients Do to Start CPAP Faster?

Beyond the clinic’s own systems, patient preparation can also help shorten the time to treatment.

Let Us Know at Booking That You Want to Start CPAP Quickly

Please let us know, when booking or at your first visit, that you would like to be tested and treated as soon as possible.
If you have a specific reason to move quickly — such as working as a professional driver, having severe daytime sleepiness, being concerned about drowsy driving, or having poorly controlled high blood pressure — please tell the doctor specifically.

Carry Out the Test as Soon as the Device Arrives

If you leave the testing device unused for several days, the results explanation will be delayed by the same amount of time.
If possible, carry out the test the day the device arrives or the following day, and return it the next morning.

Attach the Sensors Correctly

If the test data is insufficient, a repeat test may be necessary.
A repeat test requires re-shipping the device, re-testing, and re-analysis, which can significantly extend the time until CPAP begins.
Please check the instructions carefully, and contact us before the test if you have any questions.

Book Your Results Explanation Appointment Early

Even once your test results are ready, you cannot move on to CPAP without a results-explanation appointment.
We will contact you once your results arrive, so we recommend booking your appointment as early as possible.

Use Online Consultations After Starting CPAP

After CPAP begins, regular follow-up visits are needed, but using online consultations can reduce the burden of coming in each time.
At Ueno Snoring Clinic, depending on your care plan and condition, we offer ongoing CPAP management through online consultations.

Keep Your Address and Phone Number Accurate

Because your CPAP device is delivered to your home, an incorrect address or phone number can delay shipping.
If you have recently moved, or your building name or unit number is required, please make sure your booking information is entered correctly.

Can I Take CPAP Home on the Day of My Consultation?

In principle, you cannot start insured CPAP rental on the day of your first visit without first undergoing testing.
CPAP is a treatment that is introduced only after confirming the diagnosis and severity of sleep apnea and verifying that you meet insurance eligibility requirements.
Symptoms alone — such as “I snore loudly” or “my family says I stop breathing” — are not enough to confirm CPAP eligibility.
Pressure settings and mask selection are also important for continuing treatment successfully. Please begin only after receiving proper testing and explanation. (In principle, our clinic does not keep CPAP devices on hand — they are shipped directly from the manufacturer.)

Can I Start CPAP Faster If I Already Have Results from Another Clinic?

If you have recent sleep test results that include enough information to determine your diagnosis and CPAP eligibility, it may be possible to consider a treatment plan without repeating the test.
Please bring the following documents to your appointment:

• Your sleep test results report
• Documentation showing your apnea-hypopnea index or similar measures
• Your blood oxygen level results
• A referral letter or medical information document
• If you previously used CPAP, information on the device model and settings

That said, if the test is old, your weight or symptoms have changed significantly, or necessary information is missing, a new test will be required.
If you have results from a sleep test performed at another clinic and they contain the information needed to determine CPAP eligibility, we may be able to conduct your CPAP-start consultation online. Please prepare your test results in advance and contact our clinic.

Can I Start Sooner by Buying a CPAP Device Myself?

It is possible to purchase a CPAP device out of pocket, but self-managed use without medical guidance is not advisable.
CPAP is a medical device that requires careful adjustment of pressure, mask fit, and humidification settings. Too low a pressure may fail to adequately control apnea, while too high a pressure can cause air leaks, bloating, or waking during the night.
In addition, severe daytime sleepiness may sometimes be caused by a condition other than sleep apnea.
Even if you want to start quickly, it is important to first have your breathing during sleep evaluated by a medical professional and receive an explanation of your eligibility and treatment options.

Can CPAP Be Managed Entirely Through Online Consultations After It Starts?

CPAP treatment does not end once you receive the device.
After starting, we check your usage hours, remaining apnea events, air leaks, mask fit, dry mouth, nasal congestion, and daytime sleepiness to confirm that treatment is working effectively.
At Ueno Snoring Clinic, depending on your condition, ongoing CPAP management is available through online consultations.
During an online consultation, we review your CPAP usage data and symptoms, and you can discuss issues such as mask leaks, dryness, and nasal symptoms.
That said, if the doctor determines that an in-person visit or additional testing is needed, we will arrange for you to come in.

What to Check on the First Day CPAP Arrives

When your CPAP device arrives at home, first check the unit and its accessories.

• CPAP main unit
• Power cord
• Tubing
• Mask
• Humidifier or water chamber
• Instruction manual
• Supplier contact information

On the first day, rather than putting the mask on for the first time right before sleep, we recommend wearing it for 10–20 minutes while awake to get used to the airflow and the feel of the mask.
Some air leakage from the mask is normal, but if air is blowing strongly onto your eyes or cheeks, adjust the fit and headgear position.
Over-tightening can actually deform the cushion and increase air leaks, so avoid tightening the mask too much.

Common Issues Right After Starting CPAP

The Airflow Feels Too Strong

When you first use CPAP, the incoming air can feel stronger than expected.
Many devices include a feature that starts at a lower pressure and gradually increases it after you fall asleep. Please do not change the settings yourself — consult your clinic or the CPAP supplier instead.

Air Is Leaking from the Mask

Mask size, fit position, sleeping posture, and a worn-out cushion can all cause this.
If you notice significant air leakage right from the start, please check how the mask is fitted.

My Nose or Mouth Feels Dry

This can be caused by a low humidity setting, nasal congestion, or mouth breathing while using a nasal mask.
Adjusting the humidifier, treating nasal symptoms, or reconsidering the mask type may be necessary.

I Keep Taking the Mask Off During the Night

If you find yourself removing the mask unconsciously, practicing while awake can help you get used to it.
Continue for short periods every day and gradually extend the length of time you wear it.

Who Should Start CPAP Right Away?

Not everyone with suspected sleep apnea needs to act urgently, but early evaluation and testing are especially important in the following cases:

• You experience strong sleepiness while driving or working
• You have nearly fallen asleep while driving or come close to a traffic accident
• Your family says you repeatedly stop breathing for long periods
• You wake up feeling short of breath during the night
• Your high blood pressure is difficult to control even with treatment
• You have atrial fibrillation, heart failure, or cerebrovascular disease
• You experience ongoing morning headaches or severe fatigue
• Reduced daytime concentration is affecting your work

If your work involves driving or hazardous tasks in particular, please avoid driving or working while drowsy until testing and treatment are complete.

For Those Who Want to Start CPAP Quickly at Ueno Snoring Clinic

Ueno Snoring Clinic provides insured sleep testing, CPAP setup, and ongoing management.
If your at-home sleep test data is captured normally and the analysis and scheduling go smoothly, we can explain your results as soon as 3 days later.
If you are found to be a candidate for CPAP and complete the setup process after the results explanation, your CPAP device may be delivered to your home the next day or the day after.
Depending on your care plan and condition, ongoing CPAP management after setup is also available through online consultations.

Summary

Starting CPAP rental requires a first visit, a sleep test, results analysis, a doctor’s explanation of the results, a CPAP eligibility decision, and shipment of the device.
At Ueno Snoring Clinic, once an at-home sleep test has been carried out, we can explain your results in as little as 3 days if conditions allow.
If your results show you are a candidate for CPAP and you complete the setup process after the results explanation, your CPAP device may arrive at your home the next day or the day after.
That said, the number of days can vary depending on shipping and return of the testing device, clinic closures, the quality of the test data, results-explanation appointment availability, and the CPAP supplier’s delivery schedule.
If you want to start CPAP as quickly as possible, it is important to carry out the test promptly once the device arrives, and to book your results explanation early.
Ueno Snoring Clinic also offers ongoing CPAP management through online consultations, depending on your condition.
Our director’s book, “Treating Snoring with the Latest Treatments” (ranked #1 in General Medicine, #1 in Clinical Internal Medicine, and #2 in Home Medicine & Health on Amazon Japan’s bestseller charts), covers this topic in further detail.

New Book by Our Director

“Treating Snoring with the Latest Treatments”

An up-to-date guide to snoring treatment from an anesthesiologist who has overseen the sleep of more than 10,000 patients.

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Frequently Asked Questions

Q. Can I take a CPAP device home on the day of my first visit?

In principle, insured CPAP rental cannot begin on the day of your first visit without first undergoing a sleep test. A sleep test must be carried out, and CPAP eligibility determined based on the results.

Q. How many days does it take to get results at Ueno Snoring Clinic?

If you carry out the at-home sleep test and the data is captured normally with the analysis proceeding smoothly, results may be explained as soon as 3 days later. The timeline can vary depending on how quickly the device is returned, clinic closures, and the quality of the test data.

Q. If I qualify for CPAP, when will it arrive at my home?

If the setup process goes smoothly after the results explanation, it may arrive the next day or the day after. This can vary based on your delivery area, the day of the week, inventory, and order cut-off times.

Q. Can I receive my results explanation through an online consultation?

Explanations of results from tests performed at our clinic are, in principle, given in person. However, if you have results from another clinic and they include the necessary information, we may be able to conduct a CPAP-start consultation online.

Q. Can follow-up visits after CPAP starts also be done online?

Depending on your condition, ongoing CPAP management may be available through online consultations. However, if the doctor determines that an in-person visit or additional testing is necessary, we will arrange for you to come in.

Q. Can I carry out the test on the day the device arrives?

Yes. As long as you understand the instructions and know how to attach the sensors correctly, you can carry out the test the same night the device arrives. If you want your results as soon as possible, we recommend testing as soon as you receive the device.

Q. Is it possible that testing shows I don’t qualify for CPAP?

Yes, this can happen. If your results do not meet the insurance criteria for CPAP, or if further testing is needed, we will guide you toward alternative treatments or a more detailed test.

Q. If I bring results from another clinic, is a repeat test unnecessary?

If the timing and content of the previous test are sufficient for a treatment decision, it may be possible to proceed without repeating the test. Please bring your results report or referral letter with you.

Q. Should I mention that I’m in a hurry when I book my appointment?

Yes. If you have a reason to want early treatment — such as professional driving, severe daytime sleepiness, or high blood pressure — please let us know when booking or at your first visit. That said, testing and the medical eligibility determination cannot be skipped.

[Insurance-Covered Care] For anyone troubled by snoring or sleep apnea — a fully appointment-based clinic you can trust
Ueno Snoring Clinic — please feel free to contact us [same-day appointments available]
📞0120-899-930
5F Ueno Silk Building, 4-8-8 Ueno, Taito-ku, Tokyo 110-0005, Japan