Phlebotomy Technician Practice Exam (NCPT/CPT)

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How many times should SST tube be inverted?

  1. 3

  2. 5

  3. 8

  4. 10

The correct answer is: 5

Inverting the SST tube is important in order to mix the additive and blood sample properly, which is essential for accurate test results. The recommended number of inversions for an SST tube is five, as it ensures adequate mixing without causing hemolysis or clot formation. Options A, C, and D are incorrect as they either have too few or too many inversions, which can affect the integrity of the blood sample and the accuracy of the test results. It is important to follow the recommended number of inversions to get reliable results in laboratory testing.