A phlebotomist needs to collect a PT from a patient with a difficult vein. Which of the following is the best tube for the draw?
Light blue is the best tube for collecting a PT from a patient with a difficult vein.
The light blue tube is specifically designed for coagulation studies, including prothrombin time (PT) tests, and contains sodium citrate as an anticoagulant. This makes it the most suitable choice for this type of specimen collection, especially when dealing with challenging venous access.
The light green tube contains lithium heparin, which is primarily used for plasma chemistry tests rather than coagulation studies. While it can be effective for certain tests, it is not appropriate for PT collection due to its potential interference with coagulation results, making it less ideal for this scenario.
The lavender tube contains EDTA, an anticoagulant used mainly for hematology tests, such as complete blood counts (CBC). Although it prevents clotting, it is not suitable for coagulation studies like PT, as it can alter the coagulation factors and compromise test accuracy.
The royal blue tube is used primarily for trace element testing or toxicology, often containing either no additive or EDTA. It is not intended for coagulation tests, including PT, and therefore does not meet the requirements for accurate PT collection.
The light blue tube is specifically formulated for collecting samples for coagulation tests, including PT. Its sodium citrate anticoagulant preserves the integrity of the coagulation factors, making it the best choice for this procedure, especially in patients with difficult veins.
When collecting a PT from a patient with a difficult vein, the light blue tube is the optimal choice due to its specific formulation for coagulation testing. The other options—light green, lavender, and royal blue—are not suitable as they serve different purposes and can interfere with coagulation results. Selecting the appropriate tube ensures accurate testing and better patient outcomes in phlebotomy practices.
Related Questions
View allWhich of the following actions is required immediately after a phlebot...
Which of the following methods should a phlebotomist use to invert tub...
A phlebotomist has inadvertently squeezed a patient's puncture site fi...
A phlebotomist should verify that a patient has fasted for how long pr...
Which of the following actions should a phlebotomist take first when a...
Related Quizzes
View all- ✓ 500+ Practice Questions
- ✓ Detailed Explanations
- ✓ Progress Analytics
- ✓ Exam Simulations