New phlebotomist, Alex, has an order requisition on an 86 y/…

New phlebotomist, Alex, has an order requisition on an 86 y/o female patient for a CBC, BMP, ESR, troponin, d-dimer and blood culture. While palpating the antecubital area for a vein, the only “vein” that Alex is able to locate is a blood vessel which has a pulse. What is the best course of action for Alex to follow to successfully complete the blood draw for the ordered tests?