At a drug and alcohol assessment, you sit down with a licensed clinician for roughly 60 to 90 minutes while they ask detailed questions about your substance use, mental health, medical background, and legal history, score you on standardized screening questionnaires, usually collect a urine sample or breath test, and then write a report that either gives you a substance use disorder diagnosis or doesn’t, along with a specific treatment recommendation. The appointment is a conversation, not an interrogation, and most people walk out within an hour and a half.
Most people in that chair didn’t pick the appointment themselves. A DUI or other drug- or alcohol-related offense is the most common reason, usually ordered before sentencing or as a condition of probation. Employers in safety-sensitive jobs regulated by the U.S. Department of Transportation require one after a failed or refused drug test before you can return to duty. Some people schedule one on their own after their use has escalated or a family member has pushed them to.
What to Bring and How to Prepare
The clinician will ask about nearly every corner of your life, so showing up with the facts organized saves time and produces a more accurate result. Pull together:
- Your substance use history: what you use, how much, how often, when you started, and any past attempts to cut back or quit.
- Your medical and mental health history: current medications, prior diagnoses such as depression, anxiety, or PTSD, hospitalizations, and any history of withdrawal symptoms.
- Your legal history: prior arrests, DUI convictions, pending charges, and any current probation or parole terms.
- Documents: a valid ID, any court order or referral letter, and your insurance information if you’re filing a claim.
Honesty matters more than anything you bring in a folder. Assessors are trained to spot gaps between your self-report and the clinical evidence in front of them, and understating your use tends to backfire. A minimized history produces an inaccurate diagnosis, which produces a treatment recommendation that doesn’t fit your actual situation. If a judge ordered the assessment, the evaluator’s report carries real weight at your next hearing.
The Interview Itself
The interview is structured. The clinician works through a clinical framework covering seven broad areas: medical status, employment and financial support, alcohol use, drug use, legal involvement, family and social relationships, and psychiatric history.1NCBI Bookshelf. A Guide to Substance Abuse Services for Primary Care Clinicians – Chapter 4 Assessment Expect questions about how your use has affected your relationships, your work, your money, and your physical health. Some of these questions are deeply personal, and they’re supposed to be. A clinician who only asks how much you drink is doing a surface-level job.
If the assessment was court-ordered, the evaluator already knows why you’re there and will ask pointed questions about the incident that sent you. Don’t walk in with a rehearsed version of events. The assessor has sat across from hundreds of people in your situation and can tell when someone is performing instead of answering.
The Questionnaires and Drug Test
Alongside the interview, the clinician uses standardized questionnaires to put a number on the severity of your use. These are scoring instruments, not pass-or-fail tests. They let the evaluator compare your answers against established clinical benchmarks. The common ones:
- The Addiction Severity Index, a semi-structured interview that scores the same seven functional areas the main interview covers and assigns a severity rating to each.
- The CAGE questionnaire, four yes-or-no questions about problem drinking. The acronym tracks the questions: whether you’ve felt you should Cut down, whether others have Annoyed you by criticizing your drinking, whether you’ve felt Guilty about it, and whether you’ve needed a morning Eye-opener.
- The AUDIT, a 10-question tool developed by the World Health Organization that measures consumption patterns, drinking behaviors, and alcohol-related problems and produces a numerical score tied to risk levels.2National Institute on Drug Abuse. Alcohol Use Disorders Identification Test (AUDIT)
Drug testing is routine, especially for court-ordered evaluations. You may be asked for a urine sample, a breathalyzer reading, or in some cases blood or hair. The results give the evaluator objective data to set beside what you reported in the interview.
How the Clinician Reaches a Diagnosis
Once the interview, questionnaires, and any test results are in, the clinician compares your profile against the diagnostic criteria for substance use disorder in the Diagnostic and Statistical Manual of Mental Disorders (DSM-5). The DSM-5 lists 11 criteria grouped into four categories: impaired control over use, social problems caused by use, risky use, and physical indicators like tolerance and withdrawal. How many you meet determines the severity. Two or three criteria is a mild disorder, four or five is moderate, and six or more is severe.3NCBI Bookshelf. Table 3 – DSM-5-TR Criteria for Diagnosing and Classifying Substance Use Disorders Zero or one criterion means no diagnosis.
This is the hinge of the whole appointment. A “no diagnosis” finding may satisfy a court requirement with no further treatment ordered. A mild classification often leads to education classes or outpatient counseling. A severe classification usually points toward intensive programming. The diagnosis isn’t a moral judgment; it’s a clinical measurement that drives what gets recommended next.
The Treatment Recommendation
The report includes specific treatment recommendations matched to your diagnosis and your circumstances. The recommendations follow a nationally recognized continuum of care that runs from early intervention through medically managed inpatient treatment.4Medicaid.gov. Overview of Substance Use Disorder Care Clinical Guidelines The levels you’re most likely to see in a report:
- No treatment or early intervention: education classes, brief counseling, or monitoring, common for first-time DUI offenders with no clinical diagnosis.
- Outpatient treatment: weekly individual or group counseling, usually one to two meetings per week, while you continue living at home and working.
- Intensive outpatient: more structured, typically nine or more hours of programming per week spread across several days.
- Partial hospitalization: full-day clinical programming of 20 or more hours per week, with evenings at home.
- Residential or inpatient treatment: 24-hour supervised care, recommended for severe cases or when outpatient attempts haven’t worked.
The recommendation isn’t locked in forever. Clinicians reassess as treatment progresses, stepping you down to a lower level as you improve or stepping you up if the current level proves insufficient.
The Written Report and Who Sees It
The evaluator pulls everything into a written report, usually delivered within 48 hours of the appointment, though some providers offer faster turnaround. The report lays out your clinical history, your questionnaire scores, your drug test results, the DSM-5 diagnosis (or absence of one), and the specific treatment recommendations.
Who receives the report depends on why you were there. A court-ordered assessment goes to the judge or probation officer. An employer-required one goes to a designated company representative or the employee assistance program. If you scheduled it on your own, the report stays between you and the clinician unless you authorize release.
Federal law treats substance use disorder records with extra care. Under 42 U.S.C. Section 290dd-2, records identifying you as having or having had a substance use disorder are confidential and cannot be disclosed without your written consent, with narrow exceptions for medical emergencies, certain court orders paired with subpoenas, and mandatory child abuse and neglect reporting.5Office of the Law Revision Counsel. 42 US Code 290dd-2 – Confidentiality of Records6U.S. Department of Health and Human Services. Understanding Confidentiality of Substance Use Disorder (SUD) Patient Records or Part 2 The law also bars discrimination in employment, housing, health care, or access to courts based on information drawn from those records.
If You Disagree With the Result
You have the right to seek a second assessment from a different licensed evaluator if you believe the first one was inaccurate. This comes up most often when a court-ordered evaluation recommends a higher level of care than you think the facts support. The second evaluator conducts an independent assessment using the same diagnostic criteria and screening tools, and you can present the alternative report to the court or your attorney.
Be realistic about what a second opinion can do. If both evaluators reach the same conclusion, a judge is unlikely to order a third. If the two reports conflict, the court weighs the credentials and reasoning on both sides, not just the one that favors you. A second opinion works when you have a genuine clinical basis for disagreement, not simply a preference for a lighter recommendation.