Answer :
Final answer:
The correct tube used for Capillary blood gas (CBG) collection is a nonadditive tube, as it does not alter the sample's blood gases or pH, providing an accurate representation of patient's physiological state. So, the correct option is d.
Explanation:
The question asks which tube is used for Capillary blood gas (CBG) collection. For CBG tests, a specific type of tube is necessary to ensure the accuracy and integrity of the blood sample collected through capillary action. While EDTA tubes are commonly used for full blood count or iron studies as they contain ethylenediaminetetraacetic acid (EDTA) to prevent blood clotting by binding calcium, they are not the primary choice for CBG collection. The preferred type for CBG collection is a nonadditive tube, which does not alter the blood gases or pH levels of the sample, thereby providing a more accurate representation of the patient's physiological state at the time of collection.
