What must researchers explain when collecting biological samples from subjects?

When researchers collect biological samples from subjects, it is crucial to explain the future use of those samples. This transparency is essential for informed consent, as participants need to understand not only what their samples will be used for in the immediate study, but also how those samples might be utilized in future research. This information helps subjects to make an informed decision about their participation, ensuring they are comfortable with how their biological material will be handled and potentially shared. Understanding the future implications of sample use can significantly influence a subject's willingness to contribute, emphasizing the ethical obligation of researchers to provide this information.

Other factors, such as sample storage conditions, compatibility with medications, and the risks associated with blood draws, are also important to communicate, but the primary focus must be on the future use of the samples themselves as it directly pertains to the ethical considerations of informed consent in research.