What is the term for the small puncture made in the skin to obtain a blood sample?

The term that specifically describes the small puncture made in the skin to obtain a blood sample is phlebotomy. Phlebotomy is derived from the Greek words "phlebos," meaning vein, and "tomia," meaning to cut. This term encompasses the entire process involved in the drawing of blood from a patient, typically performed using a sterile needle.

While "puncture" may seem plausible as it also refers to breaking the skin, it does not capture the clinical context and specific procedure associated with drawing blood, as phlebotomy does. Additionally, "incision" indicates a more extensive cut and is not appropriate for the minor skin penetration required for blood sample collection. Therefore, phlebotomy is the most accurate term for this process.