Which blood collection device is characterized by flexible tubing?

The blood collection device that is characterized by flexible tubing is the butterfly needle. This type of needle features specialized wings that allow for better control and stability during the blood draw, while the flexible tubing attached to it provides additional maneuverability. The tubing permits nurses or medical assistants to collect samples from patients in varying positions without needing to reposition the needle frequently, making it especially useful for veins that are difficult to access or in smaller veins, such as those found in pediatric patients.

This design enhances the comfort and efficacy of the procedure, ensuring that blood can be collected efficiently and with reduced risk of complications. In contrast, other devices like the vacutainer and standard needles do not have flexible tubing; they are typically designed for more straightforward collection purposes without that added level of flexibility in the tubing.