#1
Which vein is commonly used for venipuncture?
Basilic vein
Brachial vein
Cephalic vein
Femoral vein
#2
What is the purpose of a tourniquet in phlebotomy?
To disinfect the skin
To dilate the veins
To stabilize the vein during needle insertion
To stop bleeding after venipuncture
#3
What is the term for the process of removing blood from a vein?
Hemodialysis
Phlebotomy
Hematopoiesis
Venesection
#4
Which gauge needle is commonly used for routine venipuncture?
18-gauge
20-gauge
22-gauge
24-gauge
#5
Which of the following is NOT a recommended site for capillary puncture in adults?
Ring finger
Earlobe
Heel
Thumb
#6
What is the primary purpose of the order of draw?
To maintain sample integrity
To prevent contamination
To ensure accurate test results
To promote patient comfort
#7
Which vein is commonly used for central venous catheter placement?
Radial vein
Brachial vein
Femoral vein
Cephalic vein
#8
What is the primary function of a vacutainer tube holder?
To collect blood samples
To stabilize the needle during blood collection
To store blood specimens
To transport blood to the laboratory
#9
What is the primary purpose of palpating the vein before venipuncture?
To locate the vein
To sterilize the puncture site
To prevent hematoma formation
To assess vein integrity
#10
Which of the following tests requires a fasting specimen?
Complete blood count (CBC)
Alanine aminotransferase (ALT)
Glucose
Prothrombin time (PT)
#11
Which additive is commonly used for coagulation tests?
EDTA
Sodium citrate
Heparin
Sodium fluoride
#12
What is the recommended angle for needle insertion during venipuncture?
30 degrees
45 degrees
60 degrees
90 degrees
#13
Which of the following is a pre-analytical consideration in phlebotomy?
Interpreting test results
Applying pressure to the puncture site
Centrifuging blood specimens
Identifying the patient
#14
What is the most common complication associated with arterial puncture?
Thrombosis
Air embolism
Hematoma
Infection
#15
Which anticoagulant is commonly used in blood collection tubes for chemistry tests?
EDTA
Sodium citrate
Heparin
Sodium fluoride
#16
What is the term for a blood clot that forms and remains in place in a blood vessel?
Embolus
Thrombus
Hemolysis
Fibrinolysis
#17
Which of the following is NOT a step in the process of performing a capillary puncture?
Warming the site
Applying a tourniquet
Selecting the lancet depth
Cleaning the site with alcohol
#18
What is the purpose of a butterfly needle in phlebotomy?
To draw blood from veins located deep within the body
To collect blood from pediatric patients
To facilitate blood collection from small or fragile veins
To transfer blood to blood collection tubes
#19
What is the function of sodium fluoride in blood collection tubes?
Prevents coagulation
Preserves glucose
Inhibits bacterial growth
Enhances clotting
#20
Which of the following statements about arterial blood gas (ABG) collection is true?
It requires heparinized syringes
The sample should be collected above heart level
It is typically collected in lavender-top tubes
ABG samples can be collected from any vein
#21
Which of the following is a potential complication of phlebotomy?
Hypertension
Hypoglycemia
Hematoma
Hyperkalemia
#22
Which of the following veins is often used for difficult venipuncture procedures?
Median cubital vein
Metacarpal vein
Dorsal venous network
Antecubital vein
#23
Which of the following is a key factor in preventing hemolysis during blood collection?
Using a large-bore needle
Mixing the blood vigorously after collection
Avoiding prolonged tourniquet application
Centrifuging the specimen immediately
#24
Which of the following is a symptom of vasovagal syncope during venipuncture?
Excessive bleeding
Rapid pulse rate
Decreased blood pressure
High fever
#25
Which vein is often used for central venous access in pediatric patients?
Femoral vein
Brachial vein
External jugular vein
Basilic vein