Which statement is true regarding butterfly vs vacutainer methods?

Which statement is true regarding butterfly vs vacutainer methods?

• A. Butterfly is more expensive, requires a waste tube, and can be used in all three spots
• B. Vacutainer is more expensive and uses a waste tube
• C. Butterfly cannot be used in the AC space
• D. Vacutainer is cheaper and has no waste tube

Answer: (D)

Understanding how the two venipuncture setups work helps explain why one choice is true. The vacutainer system uses pre-evacuated tubes that attach directly to a needle in a holder, so blood is drawn straight into the tubes without needing an extra discard or waste tube. Because of this direct filling, the vacutainer approach tends to be cheaper and avoids the waste-tube step in routine collections. The butterfly (winged) system, with its small-gauge needle and flexible tubing, is more expensive due to the specialized components. In some configurations, priming the line with a waste or discard tube is used to clear air and ensure proper flow before the actual collection tubes fill, which adds cost and complexity. Both methods can be used in common antecubital sites, including the AC space, so the idea that one cannot be used there isn’t accurate. So the statement that vacutainer is cheaper and has no waste tube reflects typical practice.

Understanding how the two venipuncture setups work helps explain why one choice is true. The vacutainer system uses pre-evacuated tubes that attach directly to a needle in a holder, so blood is drawn straight into the tubes without needing an extra discard or waste tube. Because of this direct filling, the vacutainer approach tends to be cheaper and avoids the waste-tube step in routine collections.

The butterfly (winged) system, with its small-gauge needle and flexible tubing, is more expensive due to the specialized components. In some configurations, priming the line with a waste or discard tube is used to clear air and ensure proper flow before the actual collection tubes fill, which adds cost and complexity.

Both methods can be used in common antecubital sites, including the AC space, so the idea that one cannot be used there isn’t accurate.

So the statement that vacutainer is cheaper and has no waste tube reflects typical practice.