Free Online OCD Screening Assessment

Common Signs of OCD

OCD involves two linked parts: obsessions (unwanted thoughts, images, or urges that cause distress) and compulsions(repetitive behaviours or mental acts carried out to reduce that distress).

Common obsessions include:

• Fear of contamination from germs, dirt, or illness

• Intrusive thoughts about harm coming to yourself or others

• Unwanted violent, sexual, or blasphemous thoughts that feel deeply out of character

• A need for things to feel "just right", symmetrical, or exact

• Persistent doubt about whether something was done — a door locked, a gas stove turned off

• Fear of losing something important, or of throwing away something that may be needed

Common compulsions include:

• Repeated hand washing, cleaning, or sanitising

• Checking locks, appliances, switches, or messages repeatedly

• Arranging or ordering objects until they feel correct

• Counting, repeating words or phrases silently, or praying to neutralise a thought

• Seeking reassurance from others, or repeatedly searching online

• Mentally reviewing past events to check whether something bad happened

Other features often reported:

• Considerable time lost to these thoughts or behaviours, often an hour or more each day

• Awareness that the thoughts are excessive, yet difficulty resisting them

• Relief after performing a compulsion that is short-lived, so the cycle repeats

• Avoiding people, places, or situations that trigger the obsessions

Important: intrusive thoughts by themselves are extremely common and are experienced by most people at some point. What distinguishes OCD is the distress they cause, the time they consume, and the compulsions carried out in response.

OCD is often misunderstood as simply liking things neat or organised. In reality, it can be highly distressing and disruptive — and it is treatable.

If these patterns are affecting your work, studies, relationships, or daily routine, a consultation with a qualified psychiatrist is recommended.

Understanding Your OCI-R Score: Scoring and Interpretation

The Obsessive-Compulsive Inventory–Revised (OCI-R) is scored out of 72. It has 18 items, each rated 0 to 4. A total score of 21 or above is the established threshold at which professional evaluation is recommended.

A screening score cannot confirm or rule out OCD. It indicates only whether a fuller assessment may be worthwhile.

Score 0–20 — Below the screening threshold

A screening score in this range does not indicate OCD, but it also cannot rule it out. OCD can present in ways this questionnaire does not fully capture, particularly where obsessions are primarily mental.

If obsessive thoughts or repetitive behaviours are affecting your daily life, that is worth discussing with a professional regardless of your score.

Score 21–40 — Above the screening threshold

A score in this range is above the established clinical threshold. Obsessive or compulsive patterns may be present and interfering with daily functioning.

A professional psychiatric evaluation is recommended to clarify what is happening and discuss options.

Score 41–55 — Well above the threshold

A score in this range suggests obsessive-compulsive symptoms that are likely affecting relationships, work, or daily routines.

A consultation with a psychiatrist is advised. OCD responds well to evidence-based treatment, and outcomes are better with professional support.

Score 56–72 — Substantially above the threshold

A score in this range suggests symptoms with substantial impact on daily life.

A psychiatric assessment is recommended without delay. Early intervention meaningfully improves outcomes in OCD.

What the OCI-R Measures

The OCI-R assesses six symptom dimensions. Where scores are elevated in particular areas, that can help guide the focus of a clinical assessment.

Washing — excessive cleaning or fear of contamination.

Obsessing — intrusive, distressing, or unwanted thoughts.

Hoarding — difficulty discarding objects, or excessive saving.

Ordering — need for symmetry, exactness, or arrangement.

Checking — repetitive checking of locks, appliances, or actions.

Neutralising — mental rituals performed to undo or counter intrusive thoughts.

Important Notes on This Screening

A screening questionnaire cannot diagnose OCD. Diagnosis requires a clinical assessment covering how long symptoms have been present, how much time they take up, and how much distress and interference they cause.

Intrusive thoughts on their own are extremely common and are not in themselves a sign of illness. What distinguishes OCD is the distress these thoughts cause and the repetitive behaviours or mental acts carried out in response.

OCD is frequently misunderstood as simply a preference for tidiness or order. It is a recognised condition that can cause considerable distress, and it is treatable.

If your score is 21 or above, or if obsessive thoughts or compulsive behaviours are affecting your work, studies, relationships, or daily routine, a consultation with a qualified psychiatrist is recommended.

Clinical reference: Foa EB, Huppert JD, Leiberg S, et al. The Obsessive-Compulsive Inventory–Revised (OCI-R): development and validation of a short version. Psychological Assessment, 2002;14(4):485–496.

This tool is provided for screening and educational purposes only and does not constitute a clinical diagnosis or replace professional medical advice.