A patient rolling up a sleeve to have a blood sample taken is an example of what?

I need more context. Is this to do a routine test while visiting a physician? Is this an involuntary test for HIV?

Cooperation with the physician/provider?

A patient rolling up their sleeve to have a blood sample taken is an example of a medical procedure known as phlebotomy. Phlebotomy is the process of drawing blood from a patient's veins for diagnostic purposes or blood donations. It is commonly performed by healthcare professionals such as nurses, phlebotomists, or medical laboratory technicians. The procedure usually involves locating a suitable vein, preparing the area, using a sterilized needle to puncture the vein, and collecting the blood sample in a tube or vial. It is a routine procedure often conducted in clinics or hospitals to obtain blood for various medical tests, monitor health conditions, or evaluate the effectiveness of treatments.