How to Talk to Your Doctor About Sleep Apnea & Home Testing

Quick answer: Your doctor screens for sleep apnea symptoms, often using the Epworth Sleepiness Scale, then typically orders a home sleep test (HST) to measure your apnea-hypopnea index (AHI). A confirmed diagnosis leads to a CPAP, APAP, or BiPAP prescription, and ongoing wireless data lets your doctor monitor compliance and adjust therapy remotely.

If you suspect a sleep disorder, start with a direct conversation with your doctor. They'll typically screen using the Epworth Sleepiness Scale (ESS), a brief, validated questionnaire that quantifies daytime sleepiness and helps distinguish ordinary tiredness from a clinical sleep disorder.¹

It's worth bringing up sleep with your doctor if you experience:

• Loud, chronic snoring, especially with gasping or choking sounds

• Morning headaches or dry mouth

• Unexplained daytime sleepiness, such as nodding off while driving or watching TV

• High blood pressure, type 2 diabetes, or heart issues that are hard to manage

Your primary care doctor can initiate testing, or refer you to a sleep medicine physician, pulmonologist, or ENT specialist.

In-lab polysomnography (PSG) used to be the only diagnostic option. Today, many doctors start with a home sleep test (HST) instead, a portable device you use in your own bed that measures respiratory effort, airflow, and blood oxygen saturation. A sleep specialist analyzes the data to calculate your AHI, the number of breathing interruptions per hour. Per AASM criteria, an AHI of 5 or higher with symptoms, or 15 or higher regardless of symptoms, confirms an OSA diagnosis.²

Once diagnosed, your doctor prescribes a specific machine type (CPAP, APAP, or BiPAP) and pressure settings based on your AHI and sleep study results.

Modern CPAP machines transmit nightly usage data wirelessly to your provider, who reviews it to confirm:

• Effectiveness: your residual AHI is under 5, meaning the machine is controlling your apneas

• Compliance: you're meeting the standard insurance threshold of at least 4 hours of use on 70% of nights³

• Pressure adjustments: your settings still fit your needs as they change, without requiring another in-lab visit

Disclaimer: This article is for informational purposes only and isn't medical advice. Talk to your doctor about your specific symptoms, testing options, and treatment plan.

This post was updated with the latest information in September 2026.

References

1. Johns MW. "A new method for measuring daytime sleepiness: the Epworth sleepiness scale." Sleep, 1991;14(6):540-545. pubmed.ncbi.nlm.nih.gov/1798888

2. American Academy of Sleep Medicine. Clinical practice guideline for diagnostic testing for OSA. aasm.org

3. CMS CPAP compliance requirements (4-hour/70% rule). cpapclarity.com summary