CSC Equipment Operation & Maintenance 2

Question 1

What is the correct procedure when a vacuum tube fails to fill during venipuncture?

Accepted Answer

Replace the tube with a new evacuated tube without withdrawing the needle

Answer

If a vacuum tube fails to fill, it should be replaced with a new evacuated tube without removing the needle from the vein.

Question 2

Which needle gauge is most commonly used for routine adult venipuncture?

Accepted Answer

21 gauge

Answer

A 21-gauge needle is the standard choice for routine adult venipuncture, balancing blood flow rate with patient comfort.

Question 3

When using a winged infusion (butterfly) set, what additional step is required when collecting a coagulation tube?

Accepted Answer

Use a discard tube first to eliminate air from the tubing

Answer

A discard tube must be drawn first when using a butterfly set to purge the dead-space air and ensure proper blood-to-anticoagulant ratio in the coagulation tube.

Question 4

How should a lancet be disposed of after a capillary puncture?

Accepted Answer

In a sharps container immediately

Answer

Used lancets are sharps and must be discarded immediately into an approved sharps container to prevent needlestick injuries.

Question 5

What does 'hemolysis' in a blood specimen most often indicate about collection technique?

Accepted Answer

Excessive force was used drawing blood into a syringe or through a small-gauge needle

Answer

Hemolysis commonly results from excessive aspiration force, using too small a needle gauge, or vigorous mixing, which ruptures red blood cells.

(CSC) Certified Specimen Collector Practice Test

(CSC) Certified Specimen Collector Practice Test

CSC Equipment Operation & Maintenance 2