BSL-23 Test: Free Borderline Symptom List Screening Online
Articles are prepared using evidence-based sources and clinical editorial standards.
Intense mood swings, fear of abandonment, unstable relationships, or chronic emptiness can be exhausting. The BSL-23 test (Borderline Symptom List) is a validated 23-item measure of borderline personality disorder (BPD) symptom severity. On LuriaLab you can take the free BSL-23 online and get instant scoring with clear interpretation.
What Is the BSL-23?
The Borderline Symptom List-23 (BSL-23) was developed by Bohus and colleagues to measure BPD-related symptoms over the past week. Its 23 items cover experiences such as:
- Emotional instability and rapid mood changes
- Fear of rejection or abandonment
- Impulsivity and self-destructive behavior
- Chronic emptiness or self-hatred
- Dissociative experiences
- Suicidal thoughts
BSL-23 is widely used in DBT and trauma programs to track symptom change. It is a screening tool, not a BPD diagnosis.
BSL-23 vs MSI-BPD
- BSL-23 — detailed symptom severity (23 items, past week)
- MSI-BPD — quick 10-item yes/no screen (7+ “yes” often used as cutoff)
Many people start with MSI-BPD, then take BSL-23 for a more detailed picture. Both are free on LuriaLab.
Related screenings
BPD traits often overlap with anxiety and dissociation. Consider GAD-7 or DES-II on LuriaLab if those symptoms are prominent.
What to Do After Your BSL-23 Results
- Review your total score without self-labeling — scores reflect symptom burden, not identity.
- Consider DBT or schema-focused therapy if symptoms are severe or persistent.
- Seek crisis support if you have suicidal thoughts — call emergency services or 988 in the United States.
- Download your report to discuss with a therapist if you choose.
Take the Free BSL-23 Test on LuriaLab
Explore borderline symptom severity: BSL-23 test on LuriaLab — free, anonymous, instant results.
Important: This screening is educational and does not replace clinical diagnosis. Only a qualified mental health professional can diagnose borderline personality disorder.