#1
Which needle gauge is commonly used for routine venipuncture?
18 gauge
21 gauge
25 gauge
30 gauge
#2
What is the preferred site for capillary blood collection in adults?
Cephalic vein
Median cubital vein
Fingerstick
Femoral vein
#3
Which anticoagulant is commonly used in blood collection tubes for hematology testing?
Heparin
EDTA
Citrate
Sodium fluoride
#4
What is the purpose of inverting blood collection tubes containing anticoagulants?
Preventing clot formation
Enhancing clot formation
Improving serum separation
Increasing hemolysis
#5
Which of the following is a critical step to ensure accurate blood glucose test results?
Collecting the sample in a red-top tube
Centrifuging the sample immediately
Allowing the patient to eat before collection
Ensuring the proper patient identification
#6
In which order should blood tubes be drawn during a multiple-tube collection?
Blue, Red, Green, Purple
Red, Blue, Purple, Green
Purple, Green, Red, Blue
Green, Purple, Blue, Red
#7
Which of the following is a pre-analytical factor that can affect blood gas analysis results?
Sample temperature
Analytical method
Laboratory technician's experience
Quality of the reagents
#8
What is the purpose of a blood culture bottle with an aerobic medium?
Promoting bacterial growth in the absence of oxygen
Preventing bacterial growth during transportation
Inactivating bacteria for safe handling
Creating an environment suitable for anaerobic bacteria
#9
Which of the following is a potential complication of improper tourniquet application during venipuncture?
Hematoma
Thrombosis
Petechiae
Hemolysis
#10
What is the primary purpose of a blood culture collection?
Testing electrolyte levels
Detecting blood disorders
Identifying microbial infections
Measuring coagulation factors
#11
Which of the following is a common complication of arterial blood gas (ABG) sample collection?
Hemolysis
Thrombosis
Infection
Air embolism
#12
What is the recommended site for arterial blood collection in adults?
Femoral artery
Radial artery
Brachial artery
Carotid artery
#13
Which factor is critical for ensuring accurate coagulation test results?
Platelet count
Sample integrity
Hemoglobin concentration
Temperature of the testing environment
#14
What is the recommended technique for collecting blood from a central venous catheter (CVC)?
Using a butterfly needle
Aspirating blood slowly
Applying a tourniquet above the catheter site
Discarding the first 5 mL of blood