Sleep Study in Hyderabad: Polysomnography and Home Sleep Test
A sleep study (polysomnography) is an overnight test that records your breathing, oxygen levels, heart rate and sleep, to diagnose sleep apnea and other sleep disorders. In Hyderabad, Dr. Kishan Srikanth Juvva, pulmonologist with a Fellowship in Sleep Medicine, arranges and interprets both home sleep tests and full in-lab sleep studies, and explains the results in person.
| Tests offered | Home sleep apnea test (Level 3) · In-lab polysomnography (Level 1) |
| Reported by | Dr. Kishan Srikanth Juvva, MD, DM, Fellowship in Sleep Medicine (ISDA) |
| Duration | One night (in-lab check-in around 9 PM, leave by 6–7 AM) |
| Report | Usually within 3–5 working days |
| Cost | Home test on request · In-lab study on request |
| Book | Breathe Well, Kondapur +91 87122 23696 · Apollo FD +91 90598 73547 |
If someone has told you that you snore loudly and stop breathing in your sleep, or you wake up exhausted no matter how long you’ve slept, a sleep study is how you find out what’s actually going on at night. In Telugu, many patients simply call it nidra pareeksha (నిద్ర పరీక్ష), the sleep test.
It’s painless and nothing goes inside your body. Most people are surprised by how ordinary the night is.
What is a sleep study (polysomnography)?
A sleep study records what your body does while you sleep. Small sensors stuck on the skin, a soft tube under the nose and an elastic belt or two around the chest measure several things at once:
| What’s measured | How | Why it matters |
|---|---|---|
| Airflow | A thin nasal tube and a temperature sensor | Shows when breathing stops (apnea) or becomes shallow (hypopnea) |
| Breathing effort | Elastic belts around the chest and abdomen | Tells obstructive apnea (still trying to breathe) apart from central apnea (no effort) |
| Oxygen level | A clip on the finger (oximeter) | Shows how far oxygen drops with each event |
| Heart rate and rhythm | Pulse sensor or ECG stickers | Picks up rhythm changes during apneas |
| Sleep stages (full study only) | Small EEG sensors on the scalp, near the eyes and on the chin | Shows whether you’re actually asleep, how deeply, and how often you’re woken |
| Leg movements (full study only) | Stickers on the shins | Picks up periodic limb movements |
| Body position and snoring | Position sensor and microphone | Shows whether apnea is worse on your back |
“Polysomnography” just means “recording many things during sleep”. The full in-lab version records all of the above. A home test records the breathing, oxygen and heart rate channels.
Who needs a sleep study?
Your doctor may recommend one if you have:
- Loud snoring with pauses in breathing, gasping or choking that someone has noticed
- Daytime sleepiness: dozing off in meetings, while reading, or while driving
- High blood pressure that stays high despite medicines
- Atrial fibrillation, heart failure, or a past stroke, with sleep symptoms
- Waking unrefreshed, with morning headaches or poor concentration
- Planned bariatric (weight-loss) surgery, or other surgery where undiagnosed sleep apnea would raise the anaesthesia risk
- A smartwatch sleep apnea alert (Apple Watch notifications became available in India in May 2026)
- Unusual behaviours in sleep: acting out dreams, or violent movements
You’ll also need a sleep study to set the right CPAP pressure, or to check whether sleep apnea has improved after major weight loss or surgery.
A questionnaire can raise suspicion, but it can’t diagnose sleep apnea. The American Academy of Sleep Medicine (AASM) guideline is clear that questionnaires and prediction tools shouldn’t be used to diagnose sleep apnea without a sleep test.
Types of sleep study: Level 1 to Level 4 explained
You’ll often see sleep studies described as Level (or Type) 1, 2, 3 or 4. The level tells you how many things are recorded and whether a technician is watching through the night.
| Level | Where | Technician present? | What’s recorded | Typical use |
|---|---|---|---|---|
| Level 1: attended polysomnography | Sleep lab | Yes, all night | Full set: brain waves, eyes, muscles, breathing, oxygen, heart, legs, position, video | The reference standard. Complex cases, suspected other sleep disorders, CPAP titration |
| Level 2: unattended polysomnography | Usually at home | No | Same full set as Level 1 | Full recording when a lab night isn’t practical. Less commonly used |
| Level 3: home sleep apnea test | At home | No | Breathing, effort, oxygen, heart rate, position (usually 4–7 channels) | Adults with a high likelihood of moderate to severe obstructive sleep apnea and no major heart or lung disease |
| Level 4: oximetry or 1–2 channel devices | At home | No | Oxygen and pulse only, or one breathing channel | Screening only. Not enough to diagnose sleep apnea on its own |
Home sleep test or in-lab study: which do I need?
This is decided at your consultation. The rules follow the AASM guideline on diagnosing adult sleep apnea.
A home sleep test is usually suitable if:
- You’re an adult with typical signs of moderate to severe sleep apnea: loud snoring, witnessed pauses, daytime sleepiness, or high blood pressure
- You don’t have significant heart failure, lung disease (such as COPD or ILD), neuromuscular weakness, or a past stroke
- You don’t regularly take strong opioid painkillers
- No other sleep disorder is suspected
An in-lab study is the better choice if:
- You have significant heart or lung disease, a past stroke, or muscle weakness
- Central sleep apnea, or under-breathing during sleep (hypoventilation), is suspected
- Another sleep disorder is possible, such as narcolepsy, a sleep movement disorder, or unusual night-time behaviours
- You have severe insomnia (a home test can underestimate sleep apnea if you hardly sleep)
- A home test came back negative, inconclusive or technically poor, but symptoms persist. The AASM guideline recommends moving to a full in-lab study rather than repeating the home test.
A home test is more comfortable, and you sleep in your own bed. An in-lab study gives the complete picture. Neither is “better” in every case; the right one depends on you.
What is a split-night sleep study?
In a split-night study, the first part of the night is used to diagnose sleep apnea. If moderate to severe sleep apnea is clearly seen in the first two hours or so, CPAP is started for the rest of the night to find the right pressure. It saves a second night in the lab. Whether a split-night is possible depends on what the first part of the night shows.
How is a sleep study done? Step by step
Home sleep test
- Pick-up or set-up: you collect the device from the clinic, or it’s set up for you . Someone shows you how to put on the finger clip, nasal tube and chest belt. It takes about 10 minutes.
- At bedtime: fit the sensors yourself, switch on the device, and go to sleep as usual.
- In the morning: remove the sensors and return the device the same day.
- Analysis: the recording is scored, and Dr. Kishan reviews it.
- Results visit: you get the report and a treatment plan.
In-lab sleep study (polysomnography)
- Check-in: arrive in the evening, around 9 PM . Bring night clothes and anything you need to feel at home: your own pillow, a book.
- Set-up: a sleep technician places the sensors over about 30–45 minutes. Nothing hurts. The paste used on the scalp washes out with shampoo.
- Sleep: lights out at your usual bedtime. You can turn over and get up to use the toilet; the technician can unhook you.
- Through the night: the technician watches the recording from another room, and can fix a loose sensor without fully waking you.
- Morning: sensors off by about 6–7 AM, and you can go straight to work.
How to prepare for a sleep study
- Take your usual medicines, unless your doctor tells you otherwise. Tell us about any sleeping pills, sedatives or painkillers.
- No caffeine after lunch: tea, coffee, colas and energy drinks.
- No alcohol on the day of the test.
- Avoid daytime naps on the day of the test.
- Wash and dry your hair. Skip oils and gels, which stop the sensors sticking. Remove nail polish from one finger for the oxygen clip.
- Eat dinner as usual before you come.
- If you have a bad cold or blocked nose, call to ask whether to reschedule. A blocked nose can change the result.
- If you already use CPAP, bring your machine and mask only if you’ve been asked to.
What if I can't sleep during the test?
This is the most common worry, and it’s usually fine. Most people sleep less well than usual on the first night, but still sleep enough for a useful result. Sleep apnea tends to show up whenever you do sleep. If you sleep too little for a reliable answer, the test can be repeated. Keeping to your usual bedtime, avoiding naps and skipping caffeine all help.
Understanding your sleep study report
Dr. Kishan goes through the report with you in person, but here are the main numbers you’ll see:
| Measure | What it means |
|---|---|
| AHI (apnea-hypopnea index) | Breathing pauses and shallow-breathing events per hour of sleep. Under 5 is normal; 5–14 mild; 15–29 moderate; 30 or more severe |
| RDI (respiratory disturbance index) | Like AHI, but also counts smaller breathing-related awakenings |
| ODI (oxygen desaturation index) | How many times per hour oxygen drops by 3–4% or more |
| Lowest oxygen (SpO₂ nadir) | The lowest oxygen level reached during the night |
| Time below 90% oxygen | How long oxygen stayed low. Matters more than a single dip |
| Sleep efficiency | Percentage of time in bed actually asleep (full studies only) |
| Positional / REM data | Whether events are worse on your back or in dream (REM) sleep, which can change the treatment options |
Sleep study cost in Hyderabad
| Test | Price at our clinic | What’s included |
|---|---|---|
| Home sleep apnea test (Level 3) | on request | Device, one night’s recording, scoring, report by Dr. Kishan |
| In-lab polysomnography (Level 1) | on request | Overnight attended study, technician, full scoring, report |
| Split-night study (diagnosis + CPAP titration) | on request | As above, plus CPAP titration in the same night |
| Results consultation | on request / included | Explanation of results and treatment plan |
What changes the cost:
- Level of study: a home test costs less than a full in-lab study.
- Split-night or second night: a separate CPAP titration night adds to the cost.
- Hospital vs clinic: hospital-based studies usually cost more.
Published price ranges for sleep studies in Hyderabad run from roughly ₹6,000 to ₹30,000, depending on the type and the setting. A home test sits at the lower end, and a full attended study in a hospital at the upper end.
Insurance: outpatient sleep studies are usually not covered unless your policy includes OPD or diagnostic benefits. Check with your insurer before booking.
After the sleep study: next steps
- No sleep apnea, or very mild: we look at other causes of tiredness or snoring, such as thyroid problems, anaemia, insomnia or a blocked nose.
- Mild to moderate sleep apnea: options include CPAP, weight management, positional therapy and an oral appliance, depending on your symptoms and the pattern on the study.
- Moderate to severe sleep apnea: CPAP is usually the first treatment. The mask is fitted, the pressure set, and follow-up is planned.
- A different sleep disorder: further tests or referral, as needed.
Sleep studies for children
Children with loud nightly snoring, breathing pauses, restless sleep, bedwetting after being dry, or attention and behaviour problems may need a sleep study. Children’s studies are scored differently from adults’, and are usually done in a lab with a parent staying overnight.
Where to get a sleep study with Dr. Kishan in Hyderabad
| Breathe Well Clinic, Kondapur | Apollo Hospitals, Financial District | |
|---|---|---|
| Consultations | Mon–Sat evenings (5:00–8:30 PM; Sunday, 10:00 AM–1:00 PM) | Mon–Sat, 9 AM – 5 PM |
| Home sleep test | ||
| In-lab polysomnography | ||
| CPAP setup and follow-up | ||
| Convenient from | Kondapur, Madhapur, Hitech City, Miyapur, Kukatpally | Gachibowli, Kokapet, Narsingi, Manikonda, Nanakramguda |
| Book | +91 87122 23696 | +91 90598 73547 |
Sleep study: frequently asked questions
Do I have to stay overnight in a hospital for a sleep study?
Not always. Many adults with typical symptoms of sleep apnea can do a home sleep test in their own bed . An overnight in-lab study is needed for complex cases, such as heart or lung disease, suspected central apnea or other sleep disorders, or when a home test is inconclusive. Your doctor decides which suits you.
How long does a sleep study take?
A sleep study takes one night. For an in-lab study, you check in around 9 PM, sensors take 30–45 minutes to place, and you leave by about 6–7 AM . A home test needs about 10 minutes of set-up at bedtime, and the device is returned the next day.
How soon will I get my sleep study results?
Usually within 3–5 working days . The night’s recording, often 7–8 hours of data, is scored, then reviewed by Dr. Kishan. You get the report at a results consultation, where the numbers are explained and a treatment plan is agreed. Urgent findings are communicated sooner.
Is a home sleep test accurate?
For the right person, yes. A home sleep test reliably detects moderate to severe obstructive sleep apnea in adults without major heart or lung disease. It can underestimate milder sleep apnea, because it doesn’t measure actual sleep time. If a home test is negative but symptoms continue, an in-lab study is the next step.
How much does a sleep study cost in Hyderabad?
At our clinic, a home sleep test is priced on request and an in-lab polysomnography on request. Across Hyderabad, published prices range from roughly ₹6,000 to ₹30,000, depending on the type of study and whether it’s done in a hospital. A split-night study with CPAP titration costs more.
Can I take my regular medicines before a sleep study?
Yes, in most cases. Take your usual medicines unless your doctor says otherwise. Tell the team about any sleeping pills, sedatives, strong painkillers or anti-anxiety medicines, because these can affect breathing and sleep. Avoid caffeine after lunch and alcohol on the day of the test.
What if I can't sleep during the sleep study?
Most people sleep less well than usual during a sleep study, but still sleep enough for a reliable result. Keep to your normal bedtime, avoid daytime naps and skip caffeine after lunch. If you sleep too little for a clear answer, the study can be repeated.
Is a sleep study painful?
No. A sleep study is painless. Sensors are stuck on the skin with tape or paste, a soft tube rests under the nose, and elastic belts go around the chest. Nothing goes inside the body and no needles are used. The paste on the scalp washes out with shampoo.
Do I need a doctor's referral for a sleep study?
A consultation first is strongly recommended. It decides whether you need a home or in-lab study, and makes sure the result can be acted on. You don’t need a separate referral letter to book a consultation with Dr. Kishan. Bring any previous reports or smartwatch sleep data.
Can I do a sleep study if I have a cold?
It’s better to reschedule if your nose is badly blocked or you have a fever. Nasal blockage can make breathing during sleep look worse than usual and affect the result. Call the clinic before your test date to rearrange; there’s usually no difficulty.
Sources
- Kapur VK, et al. Clinical practice guideline for diagnostic testing for adult obstructive sleep apnea: an AASM clinical practice guideline, Journal of Clinical Sleep Medicine 13(3): 479–504, 2017 (home vs in-lab criteria; PSG after a negative home test; split-night criteria; questionnaires not to be used alone)
- Types of diagnostic sleep testing (Levels I–III), Table 1, CMAJ 189(48): E1481–E1488, December 2017
- American Academy of Sleep Medicine AHI severity categories, as summarised by Radiopaedia
- CARE Hospitals. Sleep study cost (published Hyderabad range ₹6,000–30,000; accessed 13 Oct 2026). Used for the market range only; don’t link from the live page, because it’s a competitor
- Apple India Newsroom. Health features available on Apple Watch, 21 May 2026
- National Medical Commission advertising guidelines (6 Oct 2026), as summarised by HMS Consultants (factual fees permitted)
Medically reviewed by Dr. Kishan Srikanth Juvva, MBBS, MD, DM (Pulmonary & Critical Care Medicine), Fellowship in Sleep Medicine (ISDA). Reg. No.. This page is general information and doesn’t replace a consultation.
