Behavioral Health

Alcohol use disorder: How best to screen and intervene

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Selecting blood work in screening for AUD

Lab tests used to measure hepatic injury due to alcohol include gamma-glutamyl-transferase, aspartate aminotransferase (AST), alanine aminotransferase (ALT), and macrocytic volume, although the indices of hepatic damage have low specificity. Elevated serum ethanol levels can reveal recent alcohol use, and vitamin deficiencies and other abnormalities can be used to differentiate other causes of hepatic inflammation and co-existing health issues (TABLE 310,18). A number of as-yet-unvalidated biomarkers are being studied to assist in screening, diagnosing, and treating AUD.18

Testing for alcohol use disorder

What treatment approaches work for AUD?

Family physicians can efficiently and productively address AUD by using alcohol screening and brief intervention, which have been shown to reduce risky drinking. Reimbursement for this service is covered by such CPT codes as 99408, 99409, or H0049, or with other evaluation and management (E/M) codes by using modifier 25.

Treatment of AUD varies and should be customized to each patient’s needs, readiness, preferences, and resources. Individual and group counseling approaches can be effective, and medications are available for inpatient and outpatient settings. Psychotherapy options include brief interventions, 12-step programs (eg, Alcoholics Anonymous—https://www.aa.org/pages/en_US/find-aa-resources),motivational enhancement therapy, and cognitive behavioral therapy. Although it is beyond the scope of this article to describe these options in detail, resources are available for those who wish to learn more.19-21

Psychopharmacologic management includes US Food and Drug Administration (FDA)-approved medications such as disulfiram, naltrexone, and acamprosate, and off-label uses of other medications (TABLE 49). Not enough empiric evidence is available to judge the effectiveness of these medications in adolescents, and the FDA has not approved them for such use. Evidence from meta-analyses comparing naltrexone and acamprosate have shown naltrexone to be more efficacious in reducing heavy drinking and cravings, while acamprosate is effective in promoting abstinence.22,23 Naltrexone combined with behavioral intervention reduces the heavy drinking days and percentage of abstinence days.24

Medications for treating alcohol use disorder

Current guideline recommendations from the American Psychiatric Association25 include:

  • Naltrexone and acamprosate are recommended to treat patients with moderate-to-severe AUD in specific circumstances (eg, when nonpharmacologic approaches have failed to produce an effect or when patients prefer to use one of these medications).
  • Topiramate and gabapentin are also suggested as medications for patients with moderate-to-severe AUD, but typically after first trying naltrexone and acamprosate.
  • Disulfiram generally should not be used as first-line treatment. It produces physical reactions (eg, flushing) if alcohol is consumed within 12 to 24 hours of medication use.

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