Insomnia Test: Check Your Sleep Symptoms
Clinically reviewed by the Michigan Sleep Center clinical team · September 2026
The Insomnia Severity Index asks seven questions about sleep difficulties over the past two weeks and their effect on daily life. It takes about two minutes and gives a score from 0 to 28.
Our Michigan clinicians use this questionnaire to assess symptoms and track changes during treatment. It is a screening tool, not a diagnosis: it cannot tell you what is causing your sleep difficulties or which treatment you need.
The Insomnia Severity Index
Base your answers on the last two weeks. The first three questions ask you to rate how severe each problem has been; after that, choose whichever answer comes closest to how you feel.
Insomnia Severity Index © Charles M. Morin, 1993. Bastien, Vallières & Morin, Sleep Medicine, 2001.
Reading your score
- 0–7: no clinically significant insomnia. This score does not rule out other sleep problems or the need to discuss ongoing symptoms.
- 8–14: subthreshold insomnia. Some insomnia symptoms are present. Consider discussing them with a clinician if they persist or affect your day.
- 15–21: clinical insomnia, moderate. Discuss your symptoms and score with a clinician to determine the cause and appropriate treatment.
- 22–28: clinical insomnia, severe. Arrange an evaluation to discuss how sleep is affecting you and what may help.
These ranges describe symptom severity; they do not establish a diagnosis. Our insomnia guide explains the symptoms, types and common causes.
Two people with the same score may have different reasons for poor sleep, such as insomnia, sleep apnea, a shifted body clock or a medication side effect. A clinical evaluation helps distinguish between them.
Using the ISI to track progress
We review your ISI score alongside your sleep diary and symptoms. Repeating it during and after CBT-I helps you and your clinician assess progress and decide whether the treatment plan needs to change.
Read about insomnia treatment in Michigan to learn what CBT-I involves. We also offer anxiety therapy when worry contributes to poor sleep. For snoring, gasping or other signs of a sleep disorder, our sleep study guide explains when testing may be helpful.
Review your score with a clinician
Most appointments are by video with Michigan-licensed clinicians. Limited in-person appointments are available; confirm availability when booking. Learn about the clinicians below or visit our clinicians page to see the full team.
Deirdre Conroy
PhD, CBT-I, Clinician Trainer, Professor
Specialities: Insomnia
Approaches: Cognitive Behavioral Therapy, Mindfulness, Motivational interviewing, Solution-focused
Dr. Conroy is a leading expert in sleep medicine and cognitive behavioral therapy for insomnia. She brings extensive research experience and clinical expertise to help patients overcome sleep challenges. Her approach combines evidence-based treatments with personalized care strategies.
Jaime Wenzlick
LMSW, CBT-I, Insomnia specialist
Specialities: Insomnia, Anxiety, Depression
Approaches: Cognitive Behavioral Therapy, Mindfulness, Life Transitions
Jaime Wenzlick is a therapist who takes a warm, collaborative, and evidence-based approach to helping clients struggling with anxiety, burnout, and mood imbalances. She integrates cognitive-behavioral therapy, mindfulness, and resilience training with a whole-person lens that addresses mind, body, and nervous system. Jaime has completed specialized training in Cognitive Behavioral Therapy for Insomnia (CBT-I), allowing her to help clients address sleep difficulties that often underlie stress, mood challenges, and daily functioning. She works with clients to uncover root causes and create personalized plans to improve sleep, restore balance, and build lasting resilience.
Insomnia Test FAQs
Is this the same insomnia test a sleep clinic would give me?
Yes. The Insomnia Severity Index is used in sleep clinics and insomnia research, including at Michigan Sleep Center. A clinician considers your score alongside your sleep history, schedule and other symptoms. The score alone cannot establish a diagnosis.
Could a high score be sleep apnea instead of insomnia?
Sleep apnea can affect your score. The ISI measures sleep difficulties and their impact, but cannot identify the cause. Tell a clinician about loud snoring, gasping or pauses in breathing. Insomnia and sleep apnea often occur together. We treat insomnia and coordinate referrals to partners who treat apnea.
How often should I take the test again?
Repeating the questionnaire every few weeks can help track changes. Our clinicians use it at the start, midpoint and end of CBT-I treatment. A drop of six points or more is generally considered a meaningful improvement.
My score came back low but I still sleep badly. Am I fine?
A low score does not rule out a sleep problem. If poor sleep continues or affects your daily life, discuss it with a clinician. A sleep diary can also help you describe what has been happening.
Turn the number into a plan
Bring your score to a first appointment. A Michigan clinician will tell you what it means for you, and whether the treatment we offer is the right one.
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