A drug and alcohol evaluation is a clinical assessment conducted by a licensed addiction counselor to determine whether your substance use is a problem, and if so, how serious it is and what kind of help you need. Most people encounter this process because a court ordered it after a DUI or other legal issue, though employers, family courts, and professional licensing boards can also require one. The evaluation typically takes one to two hours, costs between $100 and $300 depending on your location and provider, and results in a written report with a diagnosis and treatment recommendations.
Why You Might Need One
The most common reason people undergo a drug and alcohol evaluation is a court order following a drinking and driving offense. In many states, anyone convicted of impaired driving must complete an assessment as a condition of sentencing. In New York, for example, first-time offenders charged with driving while intoxicated must be screened using a standardized test. If that screening suggests abuse or dependence, a full mandatory assessment follows. Repeat offenders, those with a blood alcohol concentration of 0.15% or higher, and those charged with aggravated DUI skip the screening step entirely and go straight to a full evaluation.
Courts can also order evaluations during child custody disputes, as part of probation requirements, or following drug-related charges. Beyond the legal system, the Department of Transportation requires employees in safety-sensitive positions (truck drivers, pilots, transit operators) to complete an evaluation with a Substance Abuse Professional after a positive drug test or a policy violation before they can return to duty. Some people also seek evaluations voluntarily when they’re concerned about their own drinking or drug use.
What Happens During the Evaluation
The evaluation is a face-to-face meeting with a licensed addiction counselor or substance abuse professional. It covers several tasks in a single session: completing intake paperwork, sitting for an in-depth interview, filling out standardized screening questionnaires, and providing a urine or breath sample for drug and alcohol testing.
The interview itself is detailed and personal. The counselor will ask about your substance use history, including what you use, how often, how much, and when it started. But the conversation goes well beyond that. Expect questions covering your family background, social relationships, employment history, legal history, medical conditions, and mental health. The counselor is building what clinicians call a biopsychosocial picture: how substances fit into the full context of your life. They’ll also note your mood, behavior, and how you respond during the interview, and they’ll assess any risk of harm to yourself or others.
Part of this process involves collateral contacts. The evaluator may reach out to former healthcare providers, family members, court contacts, or others to verify information and fill in gaps. Every evaluation also includes screening for co-occurring mental health conditions like depression or anxiety, since these frequently overlap with substance use problems.
Screening Tools Used
You’ll be asked to fill out one or more standardized questionnaires during the evaluation. These aren’t opinion-based; they’re validated instruments with established scoring thresholds that help the counselor determine the severity of your substance use.
For alcohol, common tools include the AUDIT (Alcohol Use Disorders Identification Test) and the Michigan Alcoholism Screening Test (MAST). For drugs other than alcohol, evaluators frequently use the Drug Abuse Screening Test (DAST), a self-report questionnaire where you answer yes or no to 28 items about your drug use patterns and consequences. A score of 6 or above generally indicates a substance use disorder, while a score above 12 points to a definite problem. Some evaluators use shorter versions of these tools depending on the setting and time available.
These questionnaires work alongside the clinical interview, not as a replacement for it. The counselor weighs your screening scores against everything else they’ve learned about you before reaching a conclusion.
How Treatment Recommendations Are Made
After gathering all the information, the counselor determines a diagnosis and recommends a specific level of treatment. These recommendations follow a widely used framework that places people along a continuum of care ranging from Level 1 (outpatient services like weekly counseling) through Level 4 (medically managed intensive inpatient care). Decimal numbers express further gradations. Someone assessed at Level 1 might attend an education program or outpatient group therapy, while someone at Level 3.5 or higher would be referred to a residential treatment facility.
The placement decision considers several dimensions: the severity of your substance use, your medical condition, any mental health issues, your readiness to change, your risk of relapse, and practical factors like transportation, housing, and family support. The goal is matching you to the least intensive level of care that can still address your needs effectively.
The Written Report
The counselor compiles everything into a formal written report that includes your diagnosis, the data supporting it, and specific treatment recommendations. This report goes to you and to whoever referred you, whether that’s a court, a probation officer, or an employer. In court-ordered cases, the assessment must typically be forwarded to you and the court within 30 days. If the report indicates treatment is needed, the court will generally require it as a condition of probation or sentencing.
The counselor will review the findings and recommendations with you directly before the report is finalized. If you’re referred to a treatment program, the evaluator may also contact the recommended provider to help coordinate your enrollment.
Privacy Protections for Your Records
Substance use disorder records carry stronger federal privacy protections than most other medical records. Under federal law (42 U.S.C. 290dd-2 and its implementing regulations), records related to your identity, diagnosis, and treatment in any substance use disorder program cannot be used to investigate or prosecute you without your written consent or a specific court order. This protection applies even if the records are obtained during a program audit.
You do have to consent to share results with the court or referral source that ordered the evaluation. But the law requires that consent for legal proceedings be kept separate from consent for other purposes like treatment coordination. Your records also cannot be redisclosed and used against you in civil, criminal, or administrative proceedings without meeting these strict requirements. If you undergo SUD counseling as part of your treatment, those counseling notes require their own separate consent before they can be shared with anyone.
How to Prepare
Bring a valid photo ID, any court documents or referral paperwork, and a list of medications you’re currently taking. If you have records from previous treatment programs or mental health providers, having that information available can speed up the process. Be prepared to answer questions honestly. The evaluation works best when you’re straightforward, and experienced counselors are trained to recognize inconsistencies between what you report and what the screening tools, collateral contacts, and clinical observations suggest.
All screenings and assessments for court-ordered cases must be conducted by a licensed substance abuse professional or an agency approved by your state’s addiction services authority. If you’re choosing your own evaluator, verify their credentials and confirm that your court or employer will accept their report before scheduling.