Phlebotomy

A certification course focused on blood collection and specimen handling techniques.

Basic Concepts

Anatomy & Physiology for Blood Collection

Understanding Veins and Arteries

Blood travels through arteries and veins, but phlebotomists usually draw from veins, which are closer to the skin and less pressurized.

Common Venipuncture Sites

  • Median cubital vein (inside the elbow)
  • Cephalic vein (thumb side of arm)
  • Basilic vein (pinky side of arm)

Knowing vein locations helps avoid nerves and arteries, making the procedure safer and more comfortable.

How Blood Flows

Blood carries oxygen, nutrients, and waste. Understanding circulation helps phlebotomists select the best vein and recognize abnormal signs during collection.

Examples

  • A phlebotomist identifies the median cubital vein before inserting the needle.

  • The basilic vein is avoided if the median cubital is accessible, as it is safer.

In a Nutshell

Knowledge of veins and basic blood flow is crucial for safe and successful blood draws.

Key Terms

Median Cubital Vein
The preferred vein for venipuncture, located in the bend of the elbow.
Artery
A blood vessel that carries blood away from the heart.