#1
Which of the following tubes is commonly used for routine blood tests?
Green top tube
Lavender top tube
Red top tube
Gray top tube
#2
What is the purpose of an anticoagulant in blood collection tubes?
To prevent the blood from clotting
To increase the viscosity of blood
To enhance clot formation
To reduce red blood cell count
#3
What does the term 'hemolysis' refer to in the context of blood collection?
Breaking down of white blood cells
Breaking down of red blood cells
Formation of blood clots
Decrease in blood viscosity
#4
Which color tube is typically used for collecting blood samples for coagulation tests?
Lavender top tube
Green top tube
Blue top tube
Gray top tube
#5
What is the primary role of a phlebotomist in the healthcare setting?
Administering vaccines
Drawing blood for diagnostic purposes
Performing surgery
Prescribing medications
#6
What is the primary purpose of using a tourniquet during phlebotomy?
To prevent blood clotting
To identify the vein
To increase blood flow
To decrease blood flow
#7
Which needle gauge is larger in diameter?
18 gauge
22 gauge
20 gauge
25 gauge
#8
Which vein is commonly used for routine venipuncture?
Radial vein
Brachial vein
Cephalic vein
Femoral vein
#9
What is the purpose of a blood culture collection bottle?
To collect serum for chemistry tests
To collect plasma for coagulation tests
To collect whole blood for microbiological testing
To collect urine for analysis
#10
Which additive is commonly found in a lavender top tube?
EDTA (Ethylenediaminetetraacetic acid)
Sodium citrate
Heparin
None of the above
#11
What is the purpose of inverting blood collection tubes several times after collection?
To mix the blood with anticoagulant
To increase blood clotting
To prevent contamination
To decrease blood flow
#12
What does the term 'venipuncture' refer to in phlebotomy?
Blood pressure measurement
Blood sample collection from a vein
Urine analysis
X-ray imaging
#13
In which order should tubes be collected during a multi-tube draw?
Yellow, Blue, Red, Green
Red, Green, Yellow, Blue
Blue, Red, Green, Yellow
Green, Yellow, Blue, Red
#14
Which factor can affect the accuracy of blood test results?
Patient's age
Time of day
Recent meal consumption
All of the above
#15
What is the recommended site for capillary puncture in infants?
#16
Which organization establishes the standards for phlebotomy procedures?
FDA (Food and Drug Administration)
WHO (World Health Organization)
CLSI (Clinical and Laboratory Standards Institute)
AMA (American Medical Association)
#17
What is the primary purpose of a butterfly needle in phlebotomy?
To collect large volumes of blood
To perform capillary puncture
To access difficult veins
To measure blood pressure