Final answer:
The phlebotomy technician should use povidone-iodine as the antiseptic solution.
Step-by-step explanation:
The phlebotomy technician should use povidone-iodine as the antiseptic solution when preparing a patient for a routine venipuncture. Povidone-iodine is an effective antiseptic that is commonly used before incision during surgery and for topical antisepsis of a patient's skin. It contains iodine, which works by oxidizing cellular components and destabilizing macromolecules.