Certified Phlebotomy Technician Exam Routine Collection Procedures 3

Question 1

A lavender-top tube is used for which of the following tests?

Accepted Answer

Complete blood count (CBC)

Answer

Lavender-top tubes contain EDTA, which preserves cellular morphology and is required for CBC analysis.

Question 2

A phlebotomist notices petechiae on a patient's arm. This finding suggests the patient may have:

Accepted Answer

A clotting disorder or thrombocytopenia

Answer

Petechiae are small red spots caused by minor hemorrhages, indicating possible thrombocytopenia or coagulopathy.

Question 3

What is the purpose of inverting evacuated tubes after collection?

Accepted Answer

To mix the blood with the tube additive

Answer

Gentle inversion mixes the blood with additives (anticoagulants, clot activators) to ensure proper specimen quality.

Question 4

Which of the following is NOT an acceptable patient identifier when collecting blood?

Accepted Answer

Room number

Answer

Room number is not a reliable identifier because patients can be moved; only patient-specific identifiers are acceptable.

Question 5

The tourniquet should be released BEFORE which step in routine venipuncture?

Accepted Answer

Removing the needle from the vein

Answer

The tourniquet should be released before withdrawing the needle to prevent hematoma formation and reduce pain.

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