52. Which of the following blood collection methods uses interchangeable collection tubes that allows a phlebotomist to draw several blood specimens at once?
Answer: A
Evacuated tube system
The evacuated tube system is designed for collecting multiple blood specimens using interchangeable collection tubes, making it efficient for phlebotomists to draw blood samples simultaneously.
A) Evacuated tube system
This method utilizes vacuum-sealed tubes that allow for the easy and efficient collection of blood. The phlebotomist can quickly switch out tubes as needed without needing to change the needle, which minimizes the risk of contamination and maximizes efficiency during the collection process.
B) Hypodermic needle and syringe system
While this method is used for blood collection, it does not allow for interchangeable tubes. The phlebotomist must fill one syringe at a time, which is less efficient for collecting multiple specimens compared to the evacuated tube system.
C) Winged infusion and syringe system
Similar to the hypodermic needle and syringe system, this method is used for drawing blood but does not facilitate the use of interchangeable collection tubes. It is more suited for smaller veins and may require multiple draws for different specimens, making it less efficient for simultaneous collection.
D) Lancet capillary system
This method is primarily used for obtaining small blood samples, often from a fingertip or heel, and is not suitable for drawing multiple specimens at once. It does not involve the use of interchangeable tubes, thus limiting its capacity for extensive blood collection compared to the evacuated tube system.
Conclusion
The evacuated tube system stands out as the only method that allows for the use of interchangeable tubes, enabling the phlebotomist to efficiently collect multiple blood samples in one session. In contrast, the other options either do not support multiple specimen collection or are limited in their application, making them less effective for this purpose.