Which veins are most commonly used for venipuncture?

• A. Median cubital and cephalic veins
• B. Basilic vein
• C. Dorsal hand veins
• D. Popliteal vein

Answer: (A)

When performing venipuncture, you want a vein that is easy to feel, large enough to draw a sufficient sample, and stable so the needle doesn’t slip. The median cubital vein, located in the crook of the elbow, fits these needs well: it’s usually large, well anchored, and relatively easy to access. If that vein isn’t suitable, the cephalic vein on the outer forearm is a common alternative because it’s often accessible and sizable too.

The basilic vein can be used in some cases, but it’s deeper and sits closer to nerves and the brachial artery, making it harder to puncture safely. Veins on the dorsum (back) of the hand are smaller and more prone to movement or rolling, so they’re less preferred. The popliteal vein in the leg is a deep vein not used for routine venipuncture due to its inaccessibility and higher risk.

So, the most commonly used veins are the median cubital vein and the cephalic vein.