Question 1

What is the preferred venipuncture site for routine blood draws in adults?

Accepted Answer

The median cubital vein in the antecubital fossa is the preferred site because it is large, well-anchored, and close to the surface.

Question 2

Why is the basilic vein considered the least preferred antecubital vein for venipuncture?

Accepted Answer

The basilic vein is least preferred because it is poorly anchored, rolls easily, and lies near the brachial artery and median cutaneous nerve, increasing the risk of complications.

Question 3

At what angle should the needle be inserted for a standard antecubital venipuncture?

Accepted Answer

The needle should be inserted at a 15- to 30-degree angle, bevel up, aligned with the vein.

Question 4

Which condition of a vein indicates it is suitable for venipuncture?

Accepted Answer

A suitable vein feels soft, bouncy, and resilient when palpated, and refills promptly after pressure is applied.

Question 5

What is a 'sclerosed' vein and how does it affect venipuncture?

Accepted Answer

A sclerosed vein is hardened and scarred from repeated punctures or disease; it should be avoided because it is difficult to enter and may not yield an adequate sample.

Venipuncture Techniques – NHA Phlebotomy Certification

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