What is the gauge of needles most commonly used in venipuncture?

Question

Quizplus · Accepted Answer

The most commonly used gauge of needles in venipuncture are 20, 21, and 22. These needles are small enough to cause minimal pain, but big enough to allow for efficient blood collection. 16 and 18 gauge needles are typically used for emergency situations or for patients with difficult veins. 23 gauge needles are generally used for pediatric patients or for fragile veins in elderly patients.

What Is the Gauge of Needles Most Commonly Used in Venipuncture