ISI Insomnia Test — Sleep Severity Screening
The ISI (Insomnia Severity Index) is a 7-item questionnaire assessing sleep difficulty, satisfaction, daytime impact, and distress. It can indicate whether sleep problems may be worth discussing with a professional — it is not a diagnosis.
Last reviewed
At a glance
- 7 questions
- ~5 minutes
- 0–28 total score
- Validated
- Bastien, Vallières & Morin (2001)
What the ISI measures
The ISI covers difficulty falling asleep, staying asleep, waking too early, satisfaction with sleep, daytime functioning, noticeability of impairment, and worry about sleep — over the past two weeks.
Who should take this screening
Consider the ISI if poor sleep persists for weeks, affects daytime energy or mood, or you want a structured measure before speaking with your GP or a sleep specialist.
How ISI scoring works
Total scores indicate insomnia severity bands — useful for screening, not definitive diagnosis.
Ready to take the ISI?
Start with a clinically validated, confidential assessment. No waiting list, no appointment needed — just clarity, and a report your GP can act on today.
What happens after you complete the screening
Immediate severity indication, confidential storage, and GP-ready export. Sleep results can be tracked alongside mood screenings on your dashboard.
Frequently asked questions
Clinical sources
Bastien CH, Vallières A, Morin CM. Validation of the Insomnia Severity Index as an outcome measure for insomnia research. Sleep Med. 2001;2(4):297-307.
Important information
ISI screening is informational only and does not replace sleep medicine evaluation when needed.
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