Which of the following is NOT a core function in alcohol and drug treatment?

Patient transportation is not considered a core function in alcohol and drug treatment. Core functions typically revolve around direct client care and assessment processes essential for developing effective treatment plans. These functions include screening, which assesses the likelihood of substance use issues; referral, which involves directing clients to appropriate services based on their needs; and consultation, which encompasses the collaboration and communication among treatment team members or with external professionals to enhance the treatment process.

While transportation may play a role in ensuring clients can access necessary services or attend appointments, it does not encompass a critical therapeutic or assessment function. Instead, it is more of a logistical support aspect of treatment rather than a fundamental function that directly contributes to the clinical objectives of substance use disorder treatment.