Phlebotomy Test American Medical Technologists 2 — Questions and Answers
Question 1: Which anticoagulant is found in a light-blue top tube used for coagulation studies?
- EDTA
- Sodium citrate (Correct answer)
- Heparin
- Sodium fluoride
Correct answer: Sodium citrate
Light-blue top tubes contain sodium citrate, which chelates calcium to prevent clotting for PT and aPTT tests.
Question 2: What is the AMT's primary credential for phlebotomists?
- CPT
- RPT (Correct answer)
- PBT(ASCP)
- RMA
Correct answer: RPT
The AMT awards the Registered Phlebotomy Technician (RPT) credential to qualified phlebotomists.
Question 3: During a venipuncture, the tourniquet should be released:
- After withdrawing the needle
- Before inserting the needle
- As soon as blood flow is established (Correct answer)
- Only after all tubes are filled
Correct answer: As soon as blood flow is established
The tourniquet should be released as soon as blood begins to flow to prevent hemoconcentration.
Question 4: A patient's arm shows a hematoma at the venipuncture site. The phlebotomist should FIRST:
- Apply a warm compress
- Continue drawing blood from the same site
- Remove the needle and apply firm pressure (Correct answer)
- Notify the physician immediately
Correct answer: Remove the needle and apply firm pressure
When a hematoma forms, the needle must be removed immediately and firm pressure applied to minimize bruising.
Question 5: Which needle gauge is most commonly used for routine adult venipuncture?
- 18 gauge
- 21 gauge (Correct answer)
- 25 gauge
- 27 gauge
Correct answer: 21 gauge
A 21-gauge needle is the standard choice for routine adult venipuncture, balancing flow rate and patient comfort.
Question 6: The basilic vein is located on which side of the arm?
- Lateral (thumb side)
- Medial (little finger side) (Correct answer)
- Anterior forearm center
- Posterior forearm
Correct answer: Medial (little finger side)
The basilic vein runs along the medial (ulnar) side of the arm and is the third choice for venipuncture due to its proximity to the brachial artery.
Question 7: A gray top tube contains which additive combination?
- EDTA and gel separator
- Sodium citrate and thrombin
- Sodium fluoride and potassium oxalate (Correct answer)
- Lithium heparin and silica
Correct answer: Sodium fluoride and potassium oxalate
Gray top tubes contain sodium fluoride (glycolysis inhibitor) and potassium oxalate (anticoagulant) for glucose and lactate testing.
Phlebotomy Test American Medical Technologists 2
Which anticoagulant is found in a light-blue top tube used for coagulation studies?