What is the difference between venocentesis and phlebotomy?

Phlebotomy is just the name of the blood draw procedure. Venipuncture is the name of the actual stick of the needle into the vein. Veni(vein)puncture.

Technically, according to Medical Terminology. Phlebotomy= Pleb/o (vein) -tomy (incision/cut into) = Incision of a vein. Venipuncture = Ven/o (vein) -puncture (surgical incision)= Surgical incision of a Vein. They are technically the same thing according to Medical Terminology. Phlebotomy is the field hence the Word/title Phlebotomist. Venipuncture is the procedure/act of drawing blood. So basically it depends on how your viewing the Words. From a Med Term stand or not.