Last updated October 7, 2026 · Report an error
DUDIT (Drug Use Disorders Identification Test) is a standard, published 11-question WHO-style screening tool for drug use problems, modeled on the AUDIT structure. The first 9 questions score 0-4 each, and the last 2 score 0, 2, or 4, for a total range of 0-44. This calculator is for general reference and educational purposes only — it is not a medical diagnosis. Consult a doctor or qualified professional for an actual assessment.
How it works
Select your sex and answer all 11 standard DUDIT questions using the dropdown options. The tool sums your answers and compares against a commonly cited screening threshold.
- Enter sex.
- Enter 1. How often do you use drugs other than alcohol?.
- Enter 2. Do you use more than one type of drug on the same occasion?.
- Enter 3. How many times do you take drugs on a typical day when you use drugs?.
- Enter 4. How often are you influenced heavily by drugs?.
- Enter 5. Over the past year, has your craving for drugs been so strong you could not resist it?.
- Enter 6. Over the past year, have you been unable to stop taking drugs once you started?.
- Enter 7. Over the past year, how often have you taken drugs and then neglected something you should have done?.
- Enter 8. Over the past year, how often have you needed a drug the morning after heavy use the day before?.
- Enter 9. Over the past year, how often have you had guilt feelings or a bad conscience because you used drugs?.
- Enter 10. Have you or anyone else been hurt (mentally or physically) because you used drugs?.
- Enter 11. Has a relative, friend, doctor, or anyone else been worried about your drug use or suggested you stop?.
- Click Calculate to see your results.
Examples
A total score of 8 for a man
At or above the commonly cited male threshold of 6 — positive screen, further evaluation suggested.
Who should use it
- Self-screening before a doctor visit to help guide the conversation.
- Research and public health screening programs.
Industry applications
- Addiction medicine and criminal justice screening research
- Public health screening programs
Advantages
- A validated, published instrument modeled on the widely used AUDIT structure.
- Covers frequency, quantity, dependence symptoms, and drug-related harm in one questionnaire.
Limitations
- Cited screening thresholds vary somewhat by population and setting.
- Self-reported answers may under- or over-estimate actual drug use patterns.
Common mistakes to avoid
- Answering based on an atypical period rather than typical use over the past year.
- Treating a positive screen as a diagnosis rather than a signal to seek further evaluation.
Best practices
- Answer all 11 questions honestly for the most meaningful, complete score.
Tips
- If your score suggests further evaluation, bring it up directly with a doctor rather than self-diagnosing.