ALL UPDATED QUESTIONS
ALREADY PASSED!!
Phlebotomy & Specimen Collection
1. According to the NHA, what is the correct order of draw for vacuum tubes?
A) Yellow, Light Blue, Red, Green, Lavender, Gray
B) Blood Cultures, Light Blue, Red, Green, Lavender, Gray
C) Lavender, Light Blue, Red, Green, Gray
D) Red, Light Blue, Green, Lavender, Gray
Answer ✔✔ ✔✔: B) Blood Cultures, Light Blue, Red, Green, Lavender, Gray
2. A patient requires a blood culture and a CBC. Which tubes will you collect and in what
order?
A) Lavender top then Yellow top
B) Yellow top then Lavender top
C) Red top then Lavender top
D) Light Blue top then Yellow top
Answer ✔✔ ✔✔: B) Yellow top then Lavender top
3. The median cubital vein is the first choice for venipuncture because it is:
A) The least painful site for the patient.
,B) The largest and most stable vein, typically well-anchored.
C) The only vein that does not require a tourniquet.
D) Located away from any arteries.
Answer ✔✔ ✔✔: B) The largest and most stable vein, typically well-anchored.
4. You are unable to obtain blood during a venipuncture. The needle is in the vein, but no
blood flows into the tube. What is the MOST likely cause?
A) The patient is dehydrated.
B) The vacuum in the tube has been lost.
C) The needle is too large for the vein.
D) The tourniquet is too loose.
Answer ✔✔ ✔✔: B) The vacuum in the tube has been lost.
5. For which test must a specimen be protected from light by wrapping it in aluminum foil
immediately after collection?
A) Prothrombin Time
B) CBC
C) Bilirubin
D) Electrolytes
Answer ✔✔ ✔✔: C) Bilirubin
6. A patient is suspected of having septicemia. Which specimen is collected to detect
microorganisms in the blood?
A) Lavender top tube
B) Blood Cultures in yellow top tubes
,C) Red top tube
D) Green top tube
Answer ✔✔ ✔✔: B) Blood Cultures in yellow top tubes
7. When performing a dermal puncture on an adult, the puncture should be made:
A) In the center of the fingertip pad.
B) In the fleshy portion of the finger, slightly to the side of the center, perpendicular to the
fingerprint lines.
C) On the earlobe for the most accurate results.
D) On the thumb, as it has the best blood flow.
Answer ✔✔ ✔✔: B) In the fleshy portion of the finger, slightly to the side of the center,
perpendicular to the fingerprint lines.
8. Which of the following additives is found in a lavender-top vacuum tube?
A) Sodium Citrate
B) Heparin
C) EDTA
D) Clot Activator
Answer ✔✔ ✔✔: C) EDTA
9. A test for cold agglutinins is ordered. How must the specimen be handled after
collection?
A) Placed immediately on ice.
B) Kept warm at 37°C.
C) Shaken vigorously to mix the agglutinins.
, D) Stored at room temperature for 24 hours.
Answer ✔✔ ✔✔: B) Kept warm at 37°C.
10. The purpose of inverting vacuum tubes after collection is to:
A) Prevent hemolysis.
B) Ensure proper mixing of the blood with the additive.
C) Speed up the clotting process in serum tubes.
D) Activate the anticoagulant.
Answer ✔✔ ✔✔: B) Ensure proper mixing of the blood with the additive.
11. Which tube should be filled completely to ensure the correct blood-to-additive ratio?
A) Lavender top
B) Light Blue top
C) Green top
D) Gray top
Answer ✔✔ ✔✔: B) Light Blue top
12. A green-top tube contains which anticoagulant?
A) EDTA
B) Sodium Citrate
C) Heparin
D) Potassium Oxalate
Answer ✔✔ ✔✔: C) Heparin
Cardiology & EKG