A phlebotomist should explain the procedure prior to venipuncture to

The Clinical Laboratory Improvement Amendments (CLIA) primarily focus on laboratory testing quality and safety, rather than patient communication or consent. While CLIA standards are important for laboratory practices, they do not specifically mandate that phlebotomists explain procedures to patients.

While assessing a patient's understanding is an important part of the consent process, the primary goal of explaining the procedure is to ensure that the patient is informed and agrees to proceed. Evaluating understanding can occur after explaining the procedure, but it is not the main reason for the explanation itself.

The Occupational Safety and Health Administration (OSHA) sets regulations to ensure workplace safety, particularly regarding exposure to bloodborne pathogens and other hazards. Although OSHA standards are critical for ensuring the safety of phlebotomists, they do not specifically address the requirement to explain procedures to patients.