In the hand winged blood collection method, which gauge needle is used?

• A. 25 gauge
• B. 21 gauge
• C. 23 gauge
• D. 27 gauge

Answer: (C)

Using a hand winged blood collection method relies on a butterfly needle that is short and flexible, designed to access superficial veins with comfort and control. The 23-gauge needle is the common standard because it provides a good balance between a clear, adequate lumen for standard evacuated tubes and minimal vein trauma. It flows smoothly enough to fill tubes efficiently without requiring excessive probing, while staying gentle on the vein to reduce bruising and discomfort. A larger bore, like a 21 gauge, would be more traumatic and is typically reserved for situations needing faster flow or larger tubes; smaller gauges, such as 25 or 27, can slow the draw and increase the risk of hemolysis or vein irritation, making them less ideal for routine venipuncture. So, for the hand winged method in typical phlebotomy, 23 gauge strikes the best balance of safety, comfort, and efficient blood collection.