Which is a correct practice for tubes with additives?

Which is a correct practice for tubes with additives?

• A. Invert vigorously for 20 seconds.
• B. Do not invert.
• C. Gently invert 5-8 times.
• D. Shake vigorously to mix.

Answer: (C)

Mixing adds is essential to distribute the additive evenly throughout the blood so clotting is controlled and test results are accurate. The best practice is to gently invert the tube 5-8 times to achieve thorough mixing without damaging cells or creating bubbles. Inverting too vigorously or shaking can cause hemolysis and platelet activation, which can alter test results and quality. Not inverting at all leaves the additive unmixed, which can lead to improper anticoagulation or stabilization. So, a gentle, multi-inversion approach ensures proper mixing while protecting the sample.

Mixing adds is essential to distribute the additive evenly throughout the blood so clotting is controlled and test results are accurate. The best practice is to gently invert the tube 5-8 times to achieve thorough mixing without damaging cells or creating bubbles.

Inverting too vigorously or shaking can cause hemolysis and platelet activation, which can alter test results and quality. Not inverting at all leaves the additive unmixed, which can lead to improper anticoagulation or stabilization. So, a gentle, multi-inversion approach ensures proper mixing while protecting the sample.