ASSIST Drug and Alcohol Screening Test (WHO) with Instant Result

For: The person who uses substances, about themselves · Takes 3–5 minutes · Reviewed by Dr. Pichayut Kasempukdeepong (Psychiatrist), 6 September 2026

ASSIST (the Alcohol, Smoking and Substance Involvement Screening Test) was developed by the World Health Organization to rate the level of risk from each substance a person uses, separately: tobacco, alcohol, cannabis, methamphetamine, ketamine, heroin and other opioids, sedatives, kratom, and more. This version follows the WHO questions and scoring exactly.

On this site, the test only asks about the substances you say you have used and skips questions that do not apply, so it takes 3 to 5 minutes. Your result gives a risk level for each substance, low, moderate, or high, with next steps. It is a preliminary screen, not a diagnosis, and your answers are not stored.

Source: WHO ASSIST V3.1 (Alcohol, Smoking and Substance Involvement Screening Test)

How Substance use screening test (ASSIST) scores are interpreted

Each substance is scored separately using the ranges below. The result is an initial screen, not a diagnosis.

Drugs and tobacco (all substances except alcohol)

Score	Level and what it means
0–3	Lower risk Your use of this substance is in the lower-risk range. Even with occasional use, there are no problems at this point. If use continues, the risk can increase.
4–26	Moderate risk Your use of this substance is in the moderate-risk range, meaning some problems have started or are likely if use continues. This level responds well to counselling and a plan to cut down or stop with a professional, usually as an outpatient.
27 or more	High risk Your use of this substance is in the high-risk range. There is a high likelihood of dependence, and you should be assessed and treated by a doctor soon. Residential treatment with round-the-clock medical care helps you get through withdrawal safely.

Alcohol

Score	Level and what it means
0–10	Lower risk Your drinking is in the lower-risk range. Even with occasional drinking, there are no problems at this point. If drinking continues, the risk can increase.
11–26	Moderate risk Your drinking is in the moderate-risk range, meaning some problems have started or are likely if it continues. This level responds well to counselling and a plan to cut down or stop with a professional, usually as an outpatient.
27 or more	High risk Your drinking is in the high-risk range. There is a high likelihood of alcohol dependence, and you should be assessed and treated by a doctor soon. Stopping suddenly on your own can cause dangerous withdrawal, so please talk to a doctor before you stop.