Question 25

EDTA tubes should be inverted 8 to 10 times after blood collection.

Inverting an EDTA tube 8 to 10 times ensures proper mixing of the anticoagulant with the blood sample, which is crucial for accurate laboratory results.

A) 5 to 7

This option is incorrect because it falls short of the recommended range. Inverting the tube only 5 to 7 times may not achieve adequate mixing of the EDTA with the blood, potentially leading to clot formation and affecting test outcomes.

B) 2 to 4

This option is also incorrect as it significantly underestimates the necessary number of inversions. Inverting only 2 to 4 times is insufficient for ensuring that the anticoagulant thoroughly interacts with the blood sample, which can result in inaccurate laboratory analyses.

C) 1 to 3

This choice is incorrect as well, as it suggests an inadequate number of inversions. Inverting the tube just 1 to 3 times does not provide the necessary mixing, increasing the risk of clotting and compromising the integrity of the sample.

D) 8 to 10

This is the correct option. Inverting the EDTA tube 8 to 10 times is the recommended practice to ensure that the anticoagulant is evenly distributed throughout the blood sample, preventing clotting and ensuring reliable test results.

Conclusion

The correct answer is option D, which emphasizes the importance of thoroughly mixing the anticoagulant with the blood sample by inverting the tube 8 to 10 times. Options A, B, and C do not provide sufficient inversions to guarantee accurate results, demonstrating the critical nature of proper blood collection techniques in laboratory settings.