PracticeTestVault review illustration for specimen handling on ASCP Phlebotomy Technician (PBT)

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ASCP Phlebotomy Technician (PBT) Review: Specimen Handling

Review specimen handling for this ASCP Phlebotomy Technician (PBT) question with the key prompt clue, correct-answer reasoning, distractor checks, and sources to verify next.

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This question-specific review guide is tied to the answer reasoning for a PracticeTestVault item. Use it after you answer the question so the review stays focused on what the prompt actually tested.

What this question is testing

Objective: Specimen Handling

Prompt focus: A phlebotomist notices that a serum specimen appears pink-tinged. Hemolysis has occurred. Which test result is most likely to be falsely affected by hemolysis?

Why the correct answer works

Potassium

Red cells contain high potassium, so hemolysis falsely elevates the potassium result.

Why the tempting wrong answer fails

The tempting wrong answer usually loses because it skips the key condition, priority, or evidence in the prompt.

Plain-language takeaway

Hemolysis releases the contents of red blood cells into the serum, and red cells contain a high concentration of potassium. This causes a falsely elevated potassium result, which is one of the most common errors from a hemolyzed specimen.

Simple analogy

Think of specimen handling like following a short checklist: identify the clue, confirm the rule, and then make the move that fits this exact scenario.

How to review it before a retake

  • Underline the command word and name what the question is asking before rereading the choices.
  • Compare the correct answer against the closest distractor and write the exact detail that separates them.
  • Retest this objective with a fresh question without looking at the rationale first.

Sources to verify next