Certified Phlebotomy Technician Exam Equipment and Supplies

Question 1

Which needle gauge is most commonly used for routine venipuncture in adults?

Accepted Answer

21 gauge

Answer

16 gauge

Answer

25 gauge

Answer

30 gauge

Question 2

What is the primary purpose of the evacuated tube system (ETS) in phlebotomy?

Accepted Answer

To create a vacuum that draws blood directly into the tube

Answer

To sterilize the collection site

Answer

To mix anticoagulants before collection

Answer

To warm the blood sample

Question 3

Which additive is found in a light blue (sodium citrate) tube?

Accepted Answer

Sodium citrate

Answer

EDTA

Answer

Heparin

Answer

Potassium oxalate

Question 4

What is the correct blood-to-additive ratio required for a sodium citrate (light blue) tube?

Accepted Answer

9:1

Answer

1:1

Answer

4:1

Answer

2:1

Question 5

A butterfly needle is most appropriate for which situation?

Accepted Answer

Small or fragile veins and pediatric patients

Answer

Large antecubital veins in adults

Answer

Arterial blood gas collection only

Answer

Central line draws

Question 6

What color tube top indicates a serum separator tube (SST) with a clot activator?

Accepted Answer

Gold or red-gray

Answer

Lavender

Answer

Green

Answer

Royal blue