Question 1

Which of the following is the most appropriate first choice for venipuncture site selection in the antecubital area of the arm?

Accepted Answer

Median cubital vein

Question 2

A health care worker is preparing for a venipuncture procedure. Which of the following steps should be performed FIRST?

Accepted Answer

Perform hand hygiene

Question 3

What is the maximum recommended time a tourniquet should be left on a patient's arm during venipuncture?

Accepted Answer

$1$ minute

Question 4

Which of the following is NOT a recommended hand hygiene practice for phlebotomists?

Accepted Answer

Wearing artificial fingernails

Question 5

A patient has a known latex allergy. Which of the following supplies should be used during venipuncture?

Accepted Answer

Nitrile gloves and nonlatex tourniquet

Question 6

Which of the following is the correct 'order of draw' for blood collection tubes?

Accepted Answer

Blood culture tube, Coagulation tube, Serum tube, Heparin tube, EDTA tube, Glycolytic inhibition tube

Question 7

A phlebotomist is collecting a blood specimen for a STAT test. What does 'STAT' mean in this context?

Accepted Answer

Specimen must be drawn and analyzed without delay

Question 8

Which of the following is a common cause of specimen hemolysis during venipuncture?

Accepted Answer

Pulling the syringe plunger back too quickly

Question 9

A phlebotomist is preparing to collect blood from a patient with an intravenous (IV) line in both arms. What should the phlebotomist do?

Accepted Answer

Consult with a supervisor or nurse for alternative site selection

Question 10

Which of the following is a recommended strategy to make difficult veins more prominent for venipuncture?

Accepted Answer

Warm the puncture site

Question 11

When labeling blood specimen tubes, which of the following should be included?

Accepted Answer

Patient's full name, date of birth, date and time of collection, and collector's ID

Question 12

Which of the following is a reason for specimen rejection by the laboratory?

Accepted Answer

Hemolyzed sample

Question 13

A patient faints during a venipuncture procedure. What is the most appropriate immediate response by the health care worker?

Accepted Answer

Stop the procedure and ensure the patient's safety

Question 14

Which of the following is a critical step in the patient identification process according to The Joint Commission?

Accepted Answer

Use at least two patient identifiers, neither of which is the patient's room number

Question 15

Which of the following is the best method for mixing blood with additives in collection tubes?

Accepted Answer

Gently invert the tubes according to manufacturer's instructions

Question 16

A phlebotomist is using the winged infusion (butterfly) method. What is a special consideration for the first tube collected?

Accepted Answer

The first tube will be underfilled by $0.5$ mL due to air in the tubing

Question 17

Which of the following is NOT a recommended strategy for needlestick prevention?

Accepted Answer

Recapping needles after use

Question 18

A timed specimen is required for therapeutic drug monitoring. Why is precise timing important?

Accepted Answer

To accurately monitor drug levels and prevent toxicity

Question 19

Which of the following is a recommended action if a blood specimen does not flow after needle insertion?

Accepted Answer

Change needle position slightly without probing

Question 20

Which of the following factors can cause preanalytical variability in blood specimen results?

Accepted Answer

Patient's age, gender, diet, and exercise

Venipuncture Procedures: Blood Specimen Collection from Basic to Advanced

Study Guide - Practice Questions