Phlebotomy Technician Practice Exam (NCPT/CPT)

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Prepare for the Phlebotomy Technician Exam (NCPT/CPT). Study with flashcards and multiple-choice questions, each with hints and explanations. Get ready for your exam!

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When should a vacutainer/collection tube be mixed?

  1. Immediately after drawing blood

  2. within 30sec of drawing blood

  3. After 1 minute of drawing blood

  4. Mixing is not required

The correct answer is: within 30sec of drawing blood

After drawing blood, the vacutainer/collection tube should be mixed within 30 seconds. This agitation ensures that the blood and any anticoagulant or additive are properly mixed, preventing clotting or other issues with the sample. Mixing immediately or waiting too long after drawing can cause inaccurate or unreliable results. Therefore, options A, C and D are incorrect as they do not align with proper blood handling and can lead to compromised samples.

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