Final answer:
In obtaining a blood specimen in a patient with an IV, the phlebotomist should select a site proximal to the IV. This helps to avoid blood contamination from the IV fluids.
Step-by-step explanation:
In obtaining a blood specimen in a patient with an IV, the phlebotomist should select a site proximal to the IV. This means that the phlebotomist should choose a vein that is close to the area where the IV is inserted. By selecting a site proximal to the IV, the phlebotomist can avoid blood contamination from the IV fluids.