Phlebotomy BOC Exam Questions and
Answers Graded A+
Which vein is most commonly used for venipuncture?
A) Basilic vein
B) Femoral vein
✔✔C) Median cubital vein
D) Cephalic vein
What is the most important step before performing a venipuncture?
A) Prepare the needle
✔✔B) Wash hands and wear gloves
C) Apply a tourniquet
D) Label the collection tube
What type of needle is typically used for routine blood draws?
✔✔A) A 21-gauge needle
B) A 27-gauge needle
C) A 15-gauge needle
1
,D) A 30-gauge needle
What is the purpose of applying a tourniquet before venipuncture?
A) To reduce blood flow
B) To disinfect the site
✔✔C) To engorge the vein for easier access
D) To collect more blood
Which of the following tubes is commonly used for coagulation studies?
A) Red top tube
✔✔B) Light blue top tube
C) Green top tube
D) Lavender top tube
What should be done if a patient feels faint during a blood draw?
A) Continue the procedure
✔✔B) Stop the procedure and lay the patient down
C) Apply more pressure
2
,D) Take a break and wait
Which additive is found in a green top blood collection tube?
A) EDTA
✔✔B) Heparin
C) Sodium citrate
D) Gel separator
What is the correct order of draw for blood collection?
✔✔A) Blood culture, light blue, red, green, lavender
B) Light blue, red, green, lavender
C) Lavender, red, light blue, green
D) Green, lavender, light blue, red
What is the recommended angle for inserting a needle during venipuncture?
A) 90 degrees
✔✔B) 15 to 30 degrees
C) 45 degrees
3
, D) 10 degrees
Which of the following is a potential complication of venipuncture?
✔✔A) Hematoma
B) Increased blood pressure
C) Infection at the injection site
D) Hyperglycemia
What is the main function of an antiseptic during venipuncture?
A) To cool the skin
✔✔B) To reduce the risk of infection
C) To numb the area
D) To promote clotting
What type of specimen is required for a fasting blood glucose test?
✔✔A) Serum
B) Whole blood
C) Plasma
4
Answers Graded A+
Which vein is most commonly used for venipuncture?
A) Basilic vein
B) Femoral vein
✔✔C) Median cubital vein
D) Cephalic vein
What is the most important step before performing a venipuncture?
A) Prepare the needle
✔✔B) Wash hands and wear gloves
C) Apply a tourniquet
D) Label the collection tube
What type of needle is typically used for routine blood draws?
✔✔A) A 21-gauge needle
B) A 27-gauge needle
C) A 15-gauge needle
1
,D) A 30-gauge needle
What is the purpose of applying a tourniquet before venipuncture?
A) To reduce blood flow
B) To disinfect the site
✔✔C) To engorge the vein for easier access
D) To collect more blood
Which of the following tubes is commonly used for coagulation studies?
A) Red top tube
✔✔B) Light blue top tube
C) Green top tube
D) Lavender top tube
What should be done if a patient feels faint during a blood draw?
A) Continue the procedure
✔✔B) Stop the procedure and lay the patient down
C) Apply more pressure
2
,D) Take a break and wait
Which additive is found in a green top blood collection tube?
A) EDTA
✔✔B) Heparin
C) Sodium citrate
D) Gel separator
What is the correct order of draw for blood collection?
✔✔A) Blood culture, light blue, red, green, lavender
B) Light blue, red, green, lavender
C) Lavender, red, light blue, green
D) Green, lavender, light blue, red
What is the recommended angle for inserting a needle during venipuncture?
A) 90 degrees
✔✔B) 15 to 30 degrees
C) 45 degrees
3
, D) 10 degrees
Which of the following is a potential complication of venipuncture?
✔✔A) Hematoma
B) Increased blood pressure
C) Infection at the injection site
D) Hyperglycemia
What is the main function of an antiseptic during venipuncture?
A) To cool the skin
✔✔B) To reduce the risk of infection
C) To numb the area
D) To promote clotting
What type of specimen is required for a fasting blood glucose test?
✔✔A) Serum
B) Whole blood
C) Plasma
4
