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WorksheetsPhlebotomy Final Exam
Total questions: 101
Worksheet time: 8hrs 25mins
Which of the following should be performed if an evacuated tube contains a clot activator?
Push the posterior needle through the tube stopper before puncturing the vein.
Gently invert the tube five times after drawing it.
Centrifuge the tube immediately after drawing it
Fill the tube only half-full with blood.
The buffy coat consists of
Red blood cells
White blood cells
Plasma
White blood cells and platelets
When collecting a blood specimen using the vacuum tube method of venipuncture, venous reflux is prevented by
Keeping the patient’s arm in a downward position
Inserting the needle at a 15-degree angle to the patient’s arm
Filling the evacuated tube to the exhaustion of the vacuum
Removing the tourniquet before withdrawing the needle from the patient’s arm
The purpose of quality control is to
Prevent accidents in the laboratory
Protect the medical assistant from bloodborne pathogens
Ensure accurate and valid test results
Ensure that the test results fall within the normal range
All answers are correct
Which of the following does NOT contain cholesterol?
Fruit juice
Whole milk
Liver
Egg yolk
The purpose of using transport media is to
Preserve a specimen in its original state until it reaches its destination
Keep the specimen at its optimal growth temperature
Reduce the number of pathogens in the specimen
Provide nutrients for the multiplication of the specimen
All answers are correct
The results of a differential white blood cell count indicate there are no basophils. This is considered
Below normal
Normal
Above normal
Which of the following is NOT a function of an oral glucose tolerance test?
To assist in the diagnosis of pre-diabetes
To assist in the diagnosis of hypoglycemia
To assist in the diagnosis of diabetes
To monitor insulin dosage
A specimen taken for microbiologic examination must not become contaminated with extraneous microorganisms, because the extraneous microorganisms may
Change the pH of the specimen
Alter the morphology of the pathogens
Prevent visualization of the pathogen
Result in the death of any pathogens present
The transfer of pathogens on a fine spray of moisture droplets is known as
Susceptibility
Droplet infection
Indirect transfer
Inoculation
Which of the following is NOT a natural defense mechanism of the body?
Phagocytosis by white blood cells
The skin
Antibiotics
Antibodies
Before meals, it is recommended that the blood glucose level for a diabetic patient fall between
60–80 mg/dL
100–180 mg/dL
80–120 mg/dL
100–140 mg/dL
What color stopper tube is used to collect a blood specimen for a prothrombin time test?
Lavender
Red
Gray
Green
Light blue
Which of the following may cause a control to fail to produce expected results?
Outdated testing reagents
Error in technique
Improper storage of testing components
All answers are correct
Which of the following is a serious side effect of an oral glucose tolerance test?
Profuse perspiration
Fainting
Irrational speech
Headache
All answers are correct
Which of the following veins is most likely to collapse when performing a venipuncture?
Veins that roll
Scarred veins
Sclerosed veins
Small veins
What is the term for glucose that is stored in muscle and liver tissue for later use?
Glucagon
Lipoprotein
Glycogen
Carbohydrate
Which of the following diseases is NOT caused by a virus?
Chickenpox
Tetanus
Mumps
Rubella
Which of the following is the proper method for identifying a patient before performing a venipuncture?
State the patient’s full name and DOB and ask the patient to verify this information.
Ask the patient to state his or her full name and DOB.
Ask the patient to state his or her full name and date of last visit.
Ask the patient for two forms of written identification.
Which of the following is NOT a handling and storage requirement for blood glucose reagent test strips?
Remove the desiccant after opening a new test strip container.
Store at room temperature.
Store in a cool, dry area.
Store with the cap tightly closed.
What term is used to describe an abnormally low level of glucose in the blood?
Hypoglycemia
Glycosuria
Hyperglycemia
Acidosis
What term is used to describe the scientific study of microorganisms and their activities?
Parasitology
Histology
Microbiology
Pathology
Which of the following results in leukopenia?
Appendicitis
Chickenpox
Chemotherapy
Rheumatic fever
Phlebotomy includes which of the following?
Skin punctures
Arterial punctures
Venipunctures
All answers are correct
If you think a vein selected for venipuncture may collapse, you should
Insert the needle slowly into the vein
Use an 18-gauge needle to collect the specimen
Use the butterfly method to perform the venipuncture
Fill the tube only one-half full with blood
To view bacteria present on a smear, it must first be
Stained with an appropriate dye
Immersed in alcohol for 15–20 minutes
Incubated for 24 hours
Allowed to air-dry for 10 minutes
How often should a patient on warfarin therapy have a PT/INR test performed?
Once each week
Every 2–4 weeks
Every 2 months
Every 6 months
Which of the following indicates the correct order of draw for the vacuum tube method of venipuncture?
Red, lavender, gray, green
Red, green, lavender, gray
Lavender, red, gray, green
Red, gray, lavender, green
All of the following are correct techniques for applying a tourniquet except
Placing the tourniquet 3–4 inches above the bend in the elbow
Asking the patient to clench his or her fist
Applying the tourniquet so that it is snug, but not tight
Leaving the tourniquet on for at least 3 minutes before drawing the specimen
During the venipuncture procedure, a sudden swelling occurs in the area around the puncture site. You should
Apply pressure to the area with an antiseptic wipe
Continue with the venipuncture
Immediately remove the tourniquet and then the needle
Call 911
Which of the following is a characteristic of cholesterol?
White, waxy substance
Component of all cell membranes
Used in the production of hormones
Used in the production of bile
All answers are correct
Which of the following is found in the serum of blood?
All answers are correct
Antibodies
Chloride
Hormones
Glucose
Which of the following is true regarding a 2-hour postprandial glucose test?
The patient is required to fast for 2 hours before the test.
A blood specimen is collected 2 hours after the patient consumes 100 g of glucose.
Blood specimens are collected at intervals over 3 hours.
A blood specimen is collected 2 hours after the patient administers his or her insulin injection.
On palpation, a scarred vein feels
Elastic and pliable
Stiff and hard
Soft and pliable
Swollen
Which of the following results in patient discomfort during the venipuncture procedure?
Allowing the alcohol to dry before making the puncture
Using the flange to change from one tube to another
Moving the needle after it has been inserted into the vein
Removing the needle at the same angle as insertion
The buildup of fatty deposits on the walls of arteries is known as
Congestive heart failure
Thrombophlebitis
Atherosclerosis
Pericarditis
When performing a venipuncture, which of the following techniques represents a violation of the OSHA standard?
Applying the tourniquet 1 inch above the bend in the elbow
Using a small-gauge needle to collect the specimen
Not labeling the blood tube
Removing the plastic holder from the needle for reuse
Which of the following gauge needles is used most often to perform a routine venipuncture using the vacuum tube method?
16 G
21 G
18 G
25 G
Hemolysis of a blood specimen results in
Collection of an insufficient quantity of blood
Inaccurate test results
Exposure of the medical assistant to bloodborne pathogens
A contaminated specimen
An individual who collects blood specimens is known as a(n)
Vampire
Venipuncturist
Optometrist
Phlebotomist
On standing, a blood specimen to which an anticoagulant has been added separates into
Plasma, buffy coat, and blood cells
Plasma and blood cells
Serum and blood cells
Serum, buffy coat, and blood cells
Your physician has requested an electrolyte profile on a patient. The laboratory directory indicates this test requires 4 mL of serum. Which of the following tubes should be used to collect the specimen?
A 4-mL SST
A 7-mL SST
A 10-mL SST
A 4-mL lavender-stoppered tube
The function of LDL is to
Carry cholesterol to the cells
Transport fat-soluble vitamins in the blood
Remove cholesterol from the cells
Protect against coronary artery disease
Most of the cholesterol found in the blood comes from
Dietary cholesterol intake
Being manufactured by the liver
Saturated fat
Cellulite
Which of the following are characteristics of the brachial artery (located in the antecubital space)?
Pulsates when palpated
Has a more elastic and thicker wall than a vein
If punctured, blood is bright red in color
If punctured, patient feels more than usual amount of pain
All answers are correct
According to the American Diabetes Association, what is the normal range for a fasting blood glucose level (in mg/dL)?
20–80
70–99
100–125
140–160
Escherichia coli normally reside in the
Vagina
Urinary tract
Large intestine
Stomach
What name is given to the interval of time between the invasion by a pathogen and the appearance of the first symptoms of the disease?
Prodromal period
Infectious period
Inoculation
Incubation period
Cholesterol is transported in the blood as a complex molecule known as a
Trans fat
Glycogen complex
Lipid
Lipoprotein
Syphilis is caused by a
Spirochete
Bacillus
Streptococcus
Diplococcus
Mr. Johnson has a hematocrit reading of 60. This is considered to be
Increased
Decreased
Normal
Invalid
What is the function of warfarin?
To inhibit the formation of blood clots
To prevent atrial fibrillation
To encourage blood clotting
To speed up production of red blood cells
What is the name of the microorganism that causes infectious mononucleosis?
Varicella
Treponema pallidum
Epstein-Barr
HIV
Whole blood is obtained by
Using a tube containing an anticoagulant
Centrifuging a clotted blood specimen
Using a red-stoppered tube
Using a tube that does not contain an anticoagulant
Infectious mononucleosis is transmitted through
Coughing and sneezing
Contaminated food
Sexual intercourse
Saliva by direct oral contact
All of the above
Which of the following techniques can be used to prevent a vein from rolling?
Applying firm pressure below and to the side of the vein
Applying the tourniquet tightly
Inserting the needle at a 10-degree angle
Inserting the needle 1/2 inch below the puncture site
Microorganisms that reside in the body but that do not cause disease are known as
Transient flora
Normal flora
Extraneous microorganisms
Staphylococci
Which of the following CANNOT result in elevated blood triglyceride levels?
Obesity
Hyperthyroidism
Type 2 diabetes
Smoking
Which of the following is NOT used to identify a pathogen?
Sensitivity testing
Microbial culture
Biochemical tests
Microcopy
What may occur if a finger puncture is made that is deeper than 3.1 mm?
Damage to nerves in the finger
Penetration of the bone
Inaccurate test results
Excessive bleeding
Which of the following is considered a risk factor for coronary artery disease?
LDL cholesterol level of 90 mg/dL
HDL cholesterol level of 25 mg/dL
Triglyceride level of 140 mg/dL
Low blood pressure
The purpose of applying a tourniquet when performing venipuncture is to
Make the patient’s veins more visible and easier to palpate
Prevent hemolysis of the blood specimen
Make the procedure more comfortable for the patient
Make it easier to insert the needle
How many blood smears are required for a differential white blood cell count?
1
2
4
3
When performing a capillary puncture, the finger should NOT be squeezed, to avoid
Diluting the blood sample with tissue fluid
Exposure of the medical assistant to bloodborne pathogens
Excessive bleeding around the puncture site
Bruising of the patient’s finger
What is the term for a substance that is being identified or measured in a laboratory test?
Standard
Analyte
Calibration
Control
When using a microhematocrit centrifuge, the hematocrit test results should be read at the
Top of the red cell column
Bottom of the red cell column
Top of the buffy coat
Top of the plasma column
Which of the following tests is NOT included in a CBC?
Differential white blood cell count
Hemoglobin
Hematocrit
Prothrombin time
Red and white blood cell counts
Which of the following is a sequela to streptococcal sore throat?
Diphtheria
Pertussis
Rheumatic fever
Viral pneumonia
Which of the following may result in hemolysis of the blood specimen?
Storing evacuated tubes at room temperature
Using a needle with a small lumen to collect the specimen
Allowing the evacuated tube to fill to the exhaustion of the vacuum
Removing the needle before removing the tourniquet
All answers are correct
If the pathogen were sensitive to an antibiotic, what would be observed when using the disc diffusion method of sensitivity testing?
Bacterial growth around the disc
Overgrowth of the disc with bacteria
A change in color of the disc
A clear zone without bacterial growth around the disc
A microbiologic specimen may be obtained from the
Vagina
Nose
Wounds
All answers are correct
Throat
What name is given to round bacteria growing in pairs?
Bacilli
Diplococci
Staphylococci
Streptococci
Patient preparation instructions for a triglyceride test include which of the following?
Follow a normal diet for 7 days before the test.
Do not consume alcohol for 24 hours before the test.
Do not eat or drink (except for water) for 12 hours before the test.
Do not consume lipid-lowering medications before the test.
All of the above
Which of the following instructions should be relayed to the patient regarding a fasting blood glucose test?
Consume a low-carbohydrate evening meal.
Refrain from smoking for 12 hours before the test.
Minimize activity for 24 hours before the test.
Do not consume food or fluid (except water) for 12 hours before the test.
All answers are correct
What is the term for a substance that is capable of combining with an antigen?
Antibody
Antitoxin
Vaccine
Antigen
Mr. Peterson has a hemoglobin reading of 16. This is considered to be
Within the reference range
Above the reference range
Below the reference range
An invalid result
The purpose of sensitivity testing is to
Identify the type of microorganism present
Produce a pure culture
Determine the best antibiotic to use to treat the condition
Determine the effectiveness of drug therapy
Conditions caused by Staphylococcus aureus include
Abscesses
Food poisoning
All answers are correct
Wound infections
Boils
An evacuated tube with a lavender stopper contains
Heparin
EDTA
Nothing
Potassium oxalate
Which of the following is an example of an antigen?
Viruses
Allergens
Bacterial toxins
Blood antigens
All answers are correct
Which of the following represents an error in technique when obtaining a capillary blood specimen?
Warming the patient’s finger by massaging it
Allowing the antiseptic to dry before making the puncture
Making the puncture perpendicular to the lines of the fingerprint
Using the first drop of blood for the test
The size of the evacuated tube you choose to obtain a venous blood specimen depends on the
Size of the patient’s veins
Patient’s clinical diagnosis
Color of the evacuated tube stopper
Amount of specimen required for the test
Which of the following antecubital veins is considered the best vein to use for a venipuncture?
Basilic vein
Cephalic vein
Brachial vein
Median cubital vein
LEUK/O
White
Against
Blue
Cell
Cyt/o
abnormal reduction in number
against
cell
clotting
-penia
study of
blood condition
abnormal condition
abnormal reduction in number
Anti-
against
clotting
stuy of
before
-coagulant
clotting
study of
blood condition
cell
-ology
blood condition
cell
against
study of
-emia
blood condition
abnormal condition
against
many
-osis
blood condition
abnormal condition
inflammation
many
poly-
many
study of
abnormal reduction
against
-itis
vein
against
condition of
inflammation
phleb/o
vein
bone marrow
cartilage
bone
myel/o
cartilage
bone
against
bone marrow
stasis
against
vein
control/stop
bone
chondr/o
bone
bone marrow
cartilage
vein
oste/o
bone marrow
vein
cartilage
bone
ante-
before
against
control/stop
inflammation
hemat/o
vein
artery
clotting
blood
-lysis
breakdown
blood
bone
condition of
