In inversion, what is being mixed?

In inversion, what is being mixed?

• A. Blood with anticoagulant or other additives.
• B. Blood with plasma only.
• C. Clot with serum.
• D. Red cells with white cells.

Answer: (A)

Inversion is about mixing the blood with the additive in the collection tube. When blood is drawn into a tube that contains an anticoagulant or other additive, gentle turning of the tube end-over-end distributes that additive evenly throughout the blood. This prevents clotting and keeps the sample suitable for the intended tests, such as keeping cells and plasma components in proper suspension. If the tube isn’t mixed, the additive may stay concentrated in one area or fail to interact with the blood, leading to clot formation or inaccurate results. The other choices don’t fit because they describe entirely different mixtures (blood with plasma only, clot with serum, or red cells with white cells) rather than the necessary step of combining blood with the anticoagulant/additive.

Inversion is about mixing the blood with the additive in the collection tube. When blood is drawn into a tube that contains an anticoagulant or other additive, gentle turning of the tube end-over-end distributes that additive evenly throughout the blood. This prevents clotting and keeps the sample suitable for the intended tests, such as keeping cells and plasma components in proper suspension. If the tube isn’t mixed, the additive may stay concentrated in one area or fail to interact with the blood, leading to clot formation or inaccurate results. The other choices don’t fit because they describe entirely different mixtures (blood with plasma only, clot with serum, or red cells with white cells) rather than the necessary step of combining blood with the anticoagulant/additive.