Which of the following should a medical assistant do to assist with hemostasis following completion of a venipuncture procedure?

To assist with hemostasis following a venipuncture procedure, it's important to ensure that the puncture site stops bleeding effectively. Telling the patient to hold pressure on the site and elevate their arm is a critical step in this process. Applying pressure directly helps to compress the blood vessels at the site and encourages the formation of a clot, thereby facilitating hemostasis. Elevating the arm can further aid in reducing blood flow to the area, which assists in minimizing bleeding.

This method is widely recognized as a best practice in phlebotomy and aligns with standard protocols for post-venipuncture care. The focus on applying pressure and elevation reduces the chances of bruising and ensures that the site heals properly.

Other choices, while they may be relevant in different contexts, do not directly contribute to assisting with hemostasis in the same effective manner.