Itamar / Lofta and others

Home Sleep Apnea Test (WatchPAT / Lofta)

The only device here that can actually diagnose something — a one-night test that answers the apnea question a tracker can only hint at.

Year one: $189; one-off
Hardware: $189; ~$189–350 depending on provider; sometimes covered by insurance with a referral
Subscription: None; not required
Battery: Single-use / rental for one to three nights

If your ring or watch keeps flagging poor sleep, low oxygen or a high resting heart rate, the question underneath is usually apnea — and no consumer wearable can answer it. A home sleep apnea test is a single-night, clinician-reviewed study that produces an AHI (apnea-hypopnea index) and an oxygen-desaturation index. Peripheral-arterial-tonometry devices like WatchPAT correlate well with in-lab polysomnography for moderate-to-severe apnea. It costs less than most of the wearables on this page and can change your life in a way none of them can.

Is the measurement validated?

Home sleep apnea testing is an accepted diagnostic pathway and correlates well with in-lab polysomnography for moderate-to-severe obstructive apnea. It can under-detect mild apnea and upper-airway resistance syndrome — a negative result with ongoing symptoms warrants an in-lab study.

What it measures · 4

Blood oxygen (SpO₂)
Respiratory rate
Resting heart rate
Sleep duration

Does it reach your record?

Manual

Results come as a clinical report — enter the key numbers into your record manually.

Explore your health record →

Best for

Anyone who snores, wakes unrefreshed, has stubborn high blood pressure, or whose wearable keeps flagging low overnight oxygen.

Watch out

A negative test doesn't rule out mild apnea or UARS. Push for an in-lab study if symptoms persist.

Manufacturer site

Price checked 2026-08-09 and quoted at MSRP — hardware pricing moves. Consumer devices estimate rather than diagnose; discuss anything clinical with your doctor.

within Sleep testing & environment