#1
Which of the following veins is commonly used for venipuncture?
Axillary vein
Brachial vein
Cephalic vein
Femoral vein
#2
What is the purpose of using a tourniquet during phlebotomy?
To dilate the veins
To prevent blood from clotting
To make the vein more visible and palpable
To decrease the blood flow
#3
What is the purpose of a syringe in phlebotomy?
To collect blood samples for analysis
To dilate the veins before venipuncture
To apply pressure to the puncture site
To clean the skin before venipuncture
#4
Which anticoagulant is commonly used in blood collection tubes for most routine tests?
Heparin
EDTA
Sodium citrate
Potassium oxalate
#5
What is the term for the process of collecting blood from a vein?
Hematology
Hemostasis
Venipuncture
Phlebotomy
#6
Which of the following is NOT a step in the venipuncture process?
Applying a tourniquet
Selecting the appropriate needle gauge
Sterilizing the puncture site with alcohol
Inserting the needle immediately after removing the tourniquet
#7
Which of the following needles has the largest diameter?
18-gauge needle
20-gauge needle
22-gauge needle
25-gauge needle
#8
What is the purpose of a winged infusion set (butterfly needle) in phlebotomy?
To collect blood for coagulation studies
To collect blood from pediatric patients
To collect blood from difficult veins or small veins
To collect arterial blood samples
#9
What is the primary reason for discarding the first few milliliters of blood drawn during venipuncture?
To prevent contamination from the skin
To ensure adequate mixing with the anticoagulant
To avoid hemolysis of the sample
To maintain the sterility of the blood collection tube
#10
What is the purpose of gently mixing blood with anticoagulant in a blood collection tube?
To prevent coagulation
To increase coagulation time
To separate serum from plasma
To activate clotting factors
#11
What is the purpose of a vacutainer tube in blood collection?
To hold the blood sample
To prevent clotting of the blood
To provide a vacuum for blood collection
To transport the blood sample to the lab
#12
What does the term 'butterfly needle' refer to in phlebotomy?
A needle used for arterial puncture
A type of tourniquet
A type of needle holder
A winged infusion set
#13
Which of the following is NOT a recommended site for capillary puncture in adults?
Finger
Earlobe
Heel
Antecubital fossa
#14
Which of the following additives is commonly used for blood glucose testing?
EDTA
Sodium citrate
Lithium heparin
Sodium fluoride
#15
Which of the following is NOT a common complication of phlebotomy?
Hematoma
Nerve injury
Thrombosis
Hypertension
#16
What is the primary purpose of arterial puncture?
To measure blood pressure
To collect blood for gas analysis
To assess liver function
To monitor electrolyte balance
#17
Which vein is commonly used for central venous catheterization?
Cephalic vein
Basilic vein
Brachial vein
Internal jugular vein