Difficulty: Hard

Average Score: 49%

Which of the following methods should a phlebotomist use to invert tubes to prevent clotting?

Rationale

Moving the tubes in a figure-eight motion 4 to 8 times after collection.

This method is effective because it allows for gentle mixing of the blood with the anticoagulant present in the tube, ensuring proper clotting prevention without causing hemolysis.

A (Shaking the tubes 4 to 8 times after collection) YOUR ANSWER

Shaking the tubes can create turbulence and lead to hemolysis, which can compromise the integrity of the blood sample. This method is too vigorous and could damage the blood cells, affecting test results.

C (Rolling the tubes between the palms of the hands 4 to 8 times after collection) YOUR ANSWER

While rolling can mix the contents, it may not provide the thorough mixing needed to ensure that anticoagulants are evenly distributed throughout the blood. This method is less effective than the figure-eight motion for preventing clotting.

D (Passing the tubes from hand to hand 4 to 8 times after collection) YOUR ANSWER

This method does not effectively mix the blood with the anticoagulant, as it lacks the necessary motion to ensure full integration. Simply passing the tubes does not provide the adequate mixing required to prevent clot formation.

Conclusion

For effective prevention of clotting in blood collection tubes, the method of moving the tubes in a figure-eight motion is superior. This technique promotes thorough mixing of the blood with anticoagulants while avoiding the risks associated with more vigorous actions, thus preserving the quality of the sample for accurate testing. Understanding these techniques is crucial for phlebotomists to ensure optimal results in laboratory analyses.

Related Questions

View all