What this test measures
Borderline personality disorder (BPD) is a pattern of intense, fast-changing emotions that shapes relationships, self-image and behaviour: stormy closeness, a strong fear of being left, anger that flares, impulsive acts, emptiness, an unsteady sense of who you are, and at times self-harm or feeling detached from reality. This test asks one yes-or-no question for each of those criteria, about how things have generally been in your adult life.
It is a screening. It can tell you whether what you describe reaches the threshold at which a closer look is usually suggested. It cannot tell you whether you have BPD; only a clinician who talks with you, usually over more than one conversation, can do that, and a score below the threshold does not rule it out.
How it is built
The test follows the structure of a ten-question screening questionnaire for borderline personality disorder, often called the MSI-BPD: one yes-or-no question for each criterion, in the same order, with the criterion on stress-related distrust and feeling unreal split over two questions, and the number of "yes" answers read against the questionnaire's published threshold of 7.
The wording of every question is our own. For the profile we group the ten questions into two sets: emotions and relationships (stormy relationships, mood swings, anger, distrust, fear of being left) and self and impulses (self-harm, impulsive acts, feeling unreal, emptiness, sense of self). The grouping is descriptive; your score is always the plain count.
What your result contains
Your free result shows whether your answers are below, or at or above, the threshold, with a short summary, and the two groups as bars. The full report adds your exact score out of 10, your score in each group, what this result tends to look like and what is still working, what to do next and what to bring to a conversation with a doctor or therapist, and a PDF to keep or to take to an appointment. The test is free; the full report is one payment, no subscription.
One thing is never behind the unlock: if you answer yes to the question on self-harm or an attempt on your life, your result starts with a note about it and the support lines, free, every time.
Not a diagnosis, and where to get support
A score at or above the threshold is a pattern worth discussing with a professional, not a label, and certainly not a judgement of you. BPD-like patterns often overlap with trauma, mood problems and ADHD, which is why a careful assessment matters. They also respond well to treatment: dialectical behaviour therapy and mentalisation-based therapy were developed for exactly this, and many people improve a great deal.
If you are struggling right now, these lines are free and confidential: Find a helpline in your country, the 988 Suicide & Crisis Lifeline in the US (call or text 988), Samaritans in the UK and Ireland (116 123) and 113 Zelfmoordpreventie in the Netherlands (113 or 0800-0113). If you are in immediate danger, call your local emergency number.
Frequently asked questions
Common questions about the BPD Test.
How long does the BPD Test take?
About two minutes. There are ten yes-or-no questions.
What does the BPD Test measure?
Whether you recognise, as a pattern in your adult life, each of the criteria of borderline personality disorder: stormy relationships, self-harm, impulsivity, mood swings, anger, distrust, feeling unreal, emptiness, an unsteady sense of self and fear of being left. The count of "yes" answers is read against the threshold of 7. Whether you are below or above the threshold is free; your exact score, the two group scores and the full report are one payment, no subscription.
Is this the MSI-BPD?
No. It follows the structure of that questionnaire (ten yes-or-no questions, one per criterion, the same threshold), but the wording of every question is our own and it is not the official instrument.
Everyone has some of these sometimes. How do I answer?
Answer yes only if it has been a real, repeated pattern for you, not something that happened once or during one difficult week. If you are unsure, think about how people close to you would describe you over the years.
Is this a diagnosis?
No. It is a screening. A score at or above the threshold means a pattern worth discussing with a doctor or therapist; only a qualified clinician can diagnose borderline personality disorder, and a lower score does not rule it out.
Is my data private?
Yes. Your answers are scored in your browser. Mental-health results are never shown on a share card: if you share the test, you share the test, not your result. We do not sell personal data and you can ask for export or deletion at any time.
Can I retake the BPD Test?
Yes. Because it asks about long-standing patterns, the result usually changes slowly. During or after therapy, retaking it every few months can show what has shifted.