Final answer:
The evacuated tube system typically includes a tourniquet, gauze, and tape, but not a pen, which is an accessory rather than a core component of the blood draw supplies.
Step-by-step explanation:
The evacuated tube system is commonly used in healthcare settings for drawing blood and generally contains several key supplies, including a pen for labeling, a tourniquet to help with vein prominence, gauze for applying pressure after the blood draw, and tape to hold the gauze in place. However, among the options provided, the one that is not typically part of the evacuated tube system supply set is a pen. The primary items involved in the evacuated tube system are designed to assist directly with the blood draw procedure itself, whereas a pen would be an additional accessory rather than an integral component.