Which of the following statements about drug samples in Indiana is correct?

The statement that practitioners must request samples in writing is correct because Indiana law requires that drug samples be provided to healthcare practitioners only when they submit a written request. This ensures proper documentation and accountability concerning the distribution of drug samples. The written request helps maintain a clear chain of custody for the samples, contributing to compliance with both legal and ethical standards in pharmaceutical practices.

The other options do not accurately reflect Indiana's regulations regarding drug samples. Drug samples cannot be traded for money, as they are intended for promotional use without associated costs. Retail pharmacies are also not permitted to distribute drug samples as a routine practice, as samples are typically intended for use in clinical settings under the supervision of qualified practitioners. While drug sample records may have confidentiality protections, they are not universally considered confidential in every context, especially where regulations could stipulate specific record-keeping procedures.