According to ASHI standards, what is a minimum requirement for sample labeling?

The minimum requirement for sample labeling according to ASHI standards is to include an identifier and the date of collection. This is crucial because the identifier ensures that the sample can be correctly traced back to the patient, which is vital for maintaining patient safety and ensuring the accuracy of test results. The date of collection provides important context for the sample, helping to correlate it with any clinical data and ensuring that any potential changes over time are taken into account in the interpretation of test results. While additional information such as the time of collection and the phlebotomist's initials may enhance the labeling process by providing more context or aiding in personnel accountability, they are not required as part of the minimum standard. Thus, the correct choice emphasizes the essential elements needed for proper sample identification in compliance with ASHI standards.