DAST-10 (Drug Abuse Screening Test): Take It, Score It, Understand Your Results
The DAST-10 (Drug Abuse Screening Test, 10-item version) is a brief self-report screening tool that measures problems related to non-medical drug use over the past 12 months. Developed by Dr. Harvey Skinner at the Addiction Research Foundation in 1982 (as the longer DAST-28) and later shortened to the 10-item version, it is widely used in primary care, behavioral health, and substance-use research. The DAST-10 takes about 2 minutes to complete, is freely available, and produces a 0-10 score that helps a clinician decide whether brief intervention or further evaluation is warranted. The DAST-10 is a screening tool, not a diagnosis of substance use disorder.
What is the DAST-10?
The DAST-10 (Drug Abuse Screening Test, 10-item form) is a brief substance-use screening questionnaire developed by Dr. Harvey Skinner at the Addiction Research Foundation in Toronto. The original DAST-28 was published in 1982 and the 10-item short form became the most commonly used version because it preserved the original instrument's psychometric performance while reducing respondent burden to under 2 minutes. The DAST-10 covers drug use other than alcohol or tobacco — including illegal drugs and prescription medications taken in ways other than as prescribed. It is freely available in the public domain and has been translated into more than 20 languages. The U.S. Preventive Services Task Force names the DAST-10 as one of the screening instruments suitable for adult drug use screening (Grade B recommendation).
What the DAST-10 measures
The DAST-10 measures the consequences of drug use over the past 12 months across 10 areas: using drugs other than for medical reasons; using more than one drug at a time; ability to stop using when wanted; blackouts or flashbacks; feeling bad or guilty about drug use; complaints from spouse or parents about drug use; neglecting family because of drug use; engaging in illegal activities to obtain drugs; experiencing withdrawal; and having medical problems from drug use. The instrument does NOT cover alcohol or tobacco — for alcohol screening, the AUDIT or AUDIT-C is the parallel WHO-developed instrument. The DAST-10 was designed to identify drug use that is causing functional or health problems, not simply any drug use.
How the DAST-10 is administered
The DAST-10 is a self-report questionnaire that takes about 2 minutes to complete. Each of the 10 items is answered Yes or No based on your experience over the past 12 months. Each Yes answer scores 1 point — except for item 3 ("Are you always able to stop using drugs when you want to?") where No scores 1 point (this is the only reverse-scored item). The total score is the sum of points across all 10 items, with a range of 0 to 10. You can complete the DAST-10 on paper or on a screen; no special preparation is required, and honest answers about the past 12 months are what give the score its meaning.
Who uses the DAST-10
The DAST-10 is used routinely in primary care, emergency departments, hospital pre-admission screening, behavioral health intake, and substance-use research worldwide. The U.S. Preventive Services Task Force recommends that primary care clinicians screen adults for unhealthy drug use (Grade B) when adequate follow-up systems are available, and names the DAST-10 as a suitable screening instrument alongside others such as the ASSIST and the single-item NIDA quick screen. Outside primary care, the DAST-10 is used in occupational health programs, addiction medicine clinics, and integrated behavioral health initiatives. An adolescent variant (sometimes called DAST-A or DAST-20) is used in adolescent populations; this page covers the adult DAST-10.
DAST-10 is a screening tool, not a diagnosis
The DAST-10 identifies patterns of drug use that may carry health or functional risk, but it does not by itself diagnose substance use disorder — a clinical diagnosis that requires a clinician's evaluation against DSM-5 criteria. A high DAST-10 score is a signal that further conversation with a clinician is warranted; a low score does not guarantee that drug use is not affecting your health, particularly if you have other risk factors or specific concerns. If you are concerned about your drug use or someone else's, effective treatments exist and early intervention has better outcomes than waiting. SAMHSA's National Helpline (1-800-662-HELP) offers free, confidential 24/7 support in the United States. If you are in crisis, call or text 988 (Suicide & Crisis Lifeline).
How to score and interpret your results
The DAST-10 produces a total score from 0 to 10 — one point for each Yes answer, with item 3 reverse-scored (No earns the point). A score of 3 or higher is the most commonly cited threshold for a positive screen, meaning the result warrants further clinical conversation rather than constituting a diagnosis.
The bands below reflect the convention used on most public clinical handouts. They are not specified in Skinner’s original 1982 paper, and individual programs may use slightly different cutoffs depending on the setting (primary care, emergency department, or behavioral health intake).
Commonly cited DAST-10 cutoff bands
| Score | Risk level | Typical suggested action |
|---|---|---|
| 0 | No problems reported | No action needed beyond routine re-screening |
| 1-2 | Low level | Monitor; re-assess at a later visit |
| 3-5 | Moderate level | Further investigation by a clinician |
| 6-8 | Substantial level | Intensive assessment and treatment |
| 9-10 | Severe level | Intensive assessment and treatment |
What the score does — and does not — tell you
A DAST-10 score is a signal, not a label. The instrument was designed to flag drug-use patterns causing functional or health problems, so the score sums consequences (guilt, family complaints, withdrawal, medical problems) rather than substances or quantities used. A score in the moderate-or-higher range means a clinician should look more closely; it does not mean a substance use disorder has been diagnosed. That distinction matters because the U.S. Preventive Services Task Force explicitly names “stigma, labeling, or medicolegal consequences” as potential harms of drug screening when results are mishandled.
The score is also only as accurate as the answers behind it. The DAST-10 is a self-report instrument and is sensitive to recall and disclosure — both of which improve when the person taking it understands the goal is help, not judgment.
The 10 areas the DAST-10 covers
The DAST-10 asks ten yes/no questions about consequences of drug use over the past 12 months. The instrument focuses on drugs other than alcohol or tobacco, including illegal drugs and prescription medications taken in ways other than as prescribed. The verbatim item wording is copyrighted by the developer and the Addiction Research Foundation; the list below paraphrases each item rather than reproducing it.
- Non-medical drug use — using drugs other than those required for medical reasons.
- Multi-drug use — using more than one drug at a time.
- Inability to stop — whether the person can always stop using when they want to (the reverse-scored item).
- Blackouts or flashbacks — memory loss or perceptual disturbances from drug use.
- Guilt or remorse — feeling bad about drug use.
- Family complaints — whether a spouse or parent has expressed concern.
- Neglected obligations — neglecting family or responsibilities because of drug use.
- Illegal acts — engaging in illegal activities to obtain drugs.
- Withdrawal — physical symptoms when stopping drug use.
- Medical problems — health issues attributed to drug use.
Why these ten?
The 10-item form was condensed from the 28-item DAST published in 1982. The original instrument had an internal-consistency reliability of 0.92 and factor-analyzed as a single underlying dimension — meaning the items moved together statistically and could be summed into one meaningful total. The short form retained the items best preserving that single-factor structure, which is why the DAST-10 can be administered in about two minutes without losing core measurement quality.
What the items do not ask about
The DAST-10 does not ask about specific substances, quantities, frequencies, or routes of administration. It also does not ask about alcohol or tobacco — for alcohol screening, the World Health Organization’s AUDIT questionnaire is the standard parallel instrument. Medications taken exactly as prescribed are not counted as drug use under the DAST-10 framework.
What a positive screen means — and what it doesn’t
A “positive screen” on the DAST-10 (most commonly a score of 3 or higher) means the questionnaire has detected a pattern warranting closer clinical attention. It does not mean the person has a substance use disorder. That diagnosis is a clinical determination made by a qualified clinician evaluating the person against the DSM-5 criteria for substance use disorder.
MedlinePlus describes substance use disorder as a “chronic brain disease” that is relapsing in nature, and notes that not everyone who uses drugs develops the disorder — outcomes depend on genetic, environmental, and developmental factors. A screening instrument like the DAST-10 cannot capture that complexity in ten yes/no items. What it can do is start the conversation.
What “positive screen” triggers clinically
The USPSTF recommends drug screening (Grade B) for adults 18 and older — with a critical caveat: only when “services for accurate diagnosis, effective treatment, and appropriate care can be offered or referred”. A positive screen is meant to be the start of a process that includes brief intervention, further evaluation, and referral. It is not meant to stand alone, and it is not meant to be punitive.
False positives and false negatives
Like any brief self-report tool, the DAST-10 can both over-call and under-call. A person who answers honestly about transient or context-bound consequences may score above the cutoff without meeting criteria for a disorder; a person who minimizes (consciously or not) may score below the cutoff while still having significant problems. Skinner’s original validation noted the instrument’s correlation with social-desirability and denial response biases was only moderate — but not zero, which is the technical way of saying self-report screens are useful, not infallible.
How accurate is the DAST-10?
The strongest published psychometric data anchor to Skinner’s 1982 development paper for the 28-item parent instrument. In that study (256 drug or alcohol clients in clinical or help-seeking populations) the DAST had an internal-consistency reliability of 0.92 — described as “substantial” — and factor analysis indicated a single underlying dimension. The 10-item form was derived from this parent instrument with the goal of preserving its psychometric structure while shortening administration time.
What the psychometric terms mean
Internal consistency (Cronbach’s alpha) measures how well items in a scale move together — whether a person who endorses one item tends to endorse others tapping the same underlying issue. An alpha of 0.92 is high; it justifies summing the items into a single meaningful total. Unidimensional means the items load onto one factor rather than several, which justifies treating the total score as a meaningful summary rather than a mix of separate sub-scores.
The screening-tool tradeoff
Brief screening instruments are deliberately tuned to be sensitive — designed to rule in people who need a longer conversation, even at the cost of some false positives. Skinner himself noted in the original paper that further validation work was needed in other populations and settings beyond the help-seeking sample. We have intentionally not quoted a single sensitivity or specificity figure on this page because reported values vary widely with the cutoff used, the reference standard, and the population sampled. What is consistent is the principle: a positive DAST-10 should always be paired with a clinical conversation, not interpreted in isolation.
Limitations and considerations
The DAST-10 is brief, free, and widely used for its intended purpose — but it is not a complete picture of drug use. Knowing the limitations helps you interpret your score honestly.
- Drugs only, not alcohol or tobacco. The DAST-10 excludes alcohol and tobacco by design. For alcohol screening, use the AUDIT or AUDIT-C. Tobacco screening uses separate instruments.
- Medications taken as prescribed are not counted. The instrument measures non-medical drug use and prescription misuse, not appropriate prescribed-medication use.
- Adults only. The NIDA screening chart specifies the DAST-10 is intended for adults; an adolescent version called the DAST-20 (sometimes called DAST-A in older literature) is the appropriate instrument for ages 12-17. The USPSTF gives a Grade I (insufficient evidence) for adolescent drug screening.
- Self-report only. The score depends entirely on honest recall over the past 12 months. The instrument has only moderate correlation with social-desirability response bias, but bias is never zero.
- No substance specificity. The DAST-10 indicates drug-related consequences are present; it does not tell you which drug or drugs are involved.
- No course or recovery tracking. The instrument is a point-in-time screen, not a longitudinal measure of recovery progress or treatment response.
- Setting changes what the score triggers. A positive screen in a primary care office launches a different conversation than one in an emergency department or research study.
- Stigma and confidentiality. USPSTF explicitly names “stigma, labeling, or medicolegal consequences” as potential harms and recommends screening only in settings where confidentiality and a clear referral pathway exist.
What to do with your results and when to seek help
A DAST-10 score is most useful when it leads to action. The right action depends on the band your score falls into.
- Score 0: No drug-related consequences reported. No further action needed; re-screening at a future routine visit is reasonable.
- Score 1-2: Low-level concerns. Consider raising the result with your primary care clinician at your next visit and self-monitoring patterns over the coming months.
- Score 3-5: Moderate concerns and the most commonly cited positive-screen threshold. Schedule a conversation with a primary care or behavioral health clinician for further assessment.
- Score 6-8 or 9-10: Substantial or severe concerns. Seek a clinical assessment promptly. Intensive evaluation and treatment are typically warranted.
Some situations warrant a clinician conversation regardless of total score:
- Withdrawal symptoms or drug-related medical problems — evaluate regardless of score.
- A low score paired with personal worry or concern from someone close to you. Screening instruments under-call as well as over-call.
- Co-occurring depression, anxiety, or ADHD. Dual-diagnosis situations require treating both conditions.
- Pregnancy or the postpartum period — the USPSTF Grade B recommendation explicitly includes pregnant and postpartum adults.
Bringing the score to a clinician
You do not need to justify your answers in advance. A useful approach is to bring the numerical score and the date you completed it, and say something like, “I took the DAST-10 and scored X. I would like to talk about what that means.” Clinicians familiar with the instrument can place the score in context and recommend next steps that may include brief intervention, further assessment, or referral to specialty care.
Treatment options exist
The National Institute on Drug Abuse describes substance use disorders as “chronic, treatable disorders that affect a person’s brain and behaviors, but from which people can recover”. NIDA outlines five primary treatment settings: outpatient care, intensive outpatient care, inpatient care, residential care programs, and opioid treatment programs. For opioid use disorder specifically, three FDA-approved medications are available — methadone, buprenorphine, and naltrexone — typically used alongside counseling and behavioral therapies. Medications are also approved for alcohol use disorder and tobacco dependence. Specific medication choices are decisions for a treating clinician.
Free, confidential help — two federal lines
- SAMHSA’s National Helpline: 1-800-662-HELP (4357). Free, confidential, 24/7. Provides referrals to local treatment facilities, support groups, and community-based organizations. Available in English and Spanish.
- 988 Suicide & Crisis Lifeline. Call or text 988. Available 24/7/365, free and confidential. Explicitly covers “mental health struggles, emotional distress, alcohol or drug use concerns” in addition to suicide support.
To find specific treatment programs in your area, FindTreatment.gov is the SAMHSA-operated locator referenced by both NIDA and MedlinePlus. Person-first language is appropriate throughout — “person with substance use disorder” rather than older stigmatizing terms — reflecting the chronic-disease framing that current federal health agencies use.
Frequently asked questions
What kind of test is the DAST-10?
The DAST-10 is a screening instrument — a brief self-report questionnaire used to detect patterns of drug-related problems that warrant further evaluation. It is not a diagnostic test. A positive screen indicates a clinical conversation is warranted, not that a diagnosis has been made.
Is there a free DAST-10 PDF I can use?
The DAST-10 is freely available and widely distributed by NIDA, USPSTF resources, and state health agencies. The NIDA screening-tools chart notes that for formal use of the instrument, providers should contact the developer. The 10-item form takes about two minutes to complete on paper or on a screen.
How is the DAST-10 different from the AUDIT?
The DAST-10 covers drugs other than alcohol and tobacco; the AUDIT (Alcohol Use Disorders Identification Test) is the World Health Organization’s parallel instrument for alcohol use. Clinicians who want to screen for both often pair them, or use combined instruments such as ASSIST or TAPS named alongside the DAST-10 in the USPSTF recommendation. For the alcohol screen, see our AUDIT page.
Can I take the DAST-10 online?
Yes. The DAST-10 is a self-report instrument and can be completed on paper, on a screen, or with a clinician. The NIDA screening-tools chart lists both self-administered and clinician-administered formats. Honest answers about the past 12 months matter much more than the format you use to complete it.
Does a high DAST-10 score mean I have a drug addiction?
No. A high DAST-10 score is a positive screen — it indicates a clinical assessment is warranted. A diagnosis of substance use disorder is a clinical determination made by a qualified clinician using DSM-5 criteria, a substantially deeper evaluation than ten yes/no questions can provide. Two people with the same DAST-10 score can have very different clinical pictures.
What is the cutoff score on the DAST-10?
A score of 3 or higher is the most commonly cited threshold for a positive screen and a prompt to seek further clinical assessment. Bands typically continue at 1-2 (low), 3-5 (moderate), 6-8 (substantial), and 9-10 (severe). These cutoffs are not specified in the original Skinner 1982 paper — they reflect clinical-handout convention and may vary by setting.
Is there a DAST-10 for teenagers?
The DAST-10 itself is intended for adults. The adolescent version is called the DAST-20 in the NIDA screening-tools chart (the literature also uses “DAST-A” interchangeably). The USPSTF gives drug screening in adolescents (ages 12-17) a Grade I, meaning current evidence is insufficient to assess the balance of benefits and harms. Screening decisions for teenagers should be made with a clinician who knows the adolescent and the setting.