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MLPAO EXAM SET OVER 1000 UPDATED QUESTIONS AND ANSWERS, Exams of Laboratory Practices and Management

London School of Hygiene & Tropical Medicine (LSHTM)Laboratory Practices and Management

MLPAO EXAM SET OVER 1000 UPDATED QUESTIONS AND ANSWERS COMPLETE VERIFIED SOLUTION100%

Typology: Exams

2024/2025

Available from 02/21/2025

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MLPAO EXAM SET

OVER 1000 UPDATED QUESTIONS AND ANSWERS

COMPLETE VERIFIED SOLUTION100%

"Which factor may cause a blood smear to be too thin?

- the angle of the spreader is too high

- the edge of the spreader is cracked

- the smear is spread too slowly

- the angle of the spreader is too low

- a dirty spreader is used - CORRECT ANSWER the angle of the spreader is too high"

"Whole blood is obtained:

- by using a tube containing an anticoagulant

- by centrifuging a clotted specimen

- by using a red stoppered tube

- by using a tube that doesn't contain an anticoagulant - CORRECT ANSWER by using a tube containing an

anticoagulant"

"How will drawing a small amount of blood in the EDTA tube affect the spun hematocrit value?

- No affect

- Blood will hemolyze and give an inaccurate result

- Falsely increased value

- Falsely decreased value

- Clots will form and a hematocrit cannot be done - CORRECT ANSWER Falsely decreased value"

"If you have Rh-positive blood, it means:

- you can not receive transfusions at all

- you should only receive transfusions of Rh-positive blood

- you should only receive transfusions of Rh-negative blood

- you can receive transfusions of both Rh-positive and Rh-negative blood - CORRECT ANSWER - you can

receive transfusions of both Rh-positive and Rh-negative blood"

"What is the most common cause of left axis deviation?

- Atrial septal defects

- Left ventricular hypertrophy

- Right ventricular hypertrophy

- Defects of the conduction system - CORRECT ANSWER Defects of the conduction system"

"What does ST-elevation suggest?

1 | P a g e

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Download MLPAO EXAM SET OVER 1000 UPDATED QUESTIONS AND ANSWERS and more Exams Laboratory Practices and Management in PDF only on Docsity!

MLPAO EXAM SET

OVER 1000 UPDATED QUESTIONS AND ANSWERS

COMPLETE VERIFIED SOLUTION100%

"Which factor may cause a blood smear to be too thin?

the angle of the spreader is too high
the edge of the spreader is cracked
the smear is spread too slowly
the angle of the spreader is too low
a dirty spreader is used - CORRECT ANSWER the angle of the spreader is too high" "Whole blood is obtained:
by using a tube containing an anticoagulant
by centrifuging a clotted specimen
by using a red stoppered tube
by using a tube that doesn't contain an anticoagulant - CORRECT ANSWER by using a tube containing an anticoagulant" "How will drawing a small amount of blood in the EDTA tube affect the spun hematocrit value?
No affect
Blood will hemolyze and give an inaccurate result
Falsely increased value
Falsely decreased value
Clots will form and a hematocrit cannot be done - CORRECT ANSWER Falsely decreased value" "If you have Rh-positive blood, it means:
you can not receive transfusions at all
you should only receive transfusions of Rh-positive blood
you should only receive transfusions of Rh-negative blood
you can receive transfusions of both Rh-positive and Rh-negative blood - CORRECT ANSWER - you can receive transfusions of both Rh-positive and Rh-negative blood" "What is the most common cause of left axis deviation?
Atrial septal defects
Left ventricular hypertrophy
Right ventricular hypertrophy
Defects of the conduction system - CORRECT ANSWER Defects of the conduction system" "What does ST-elevation suggest?

Bundle branch block
The leads are on the wrong way around
Heart murmur
Myocardial infarction - CORRECT ANSWER Myocardial infarction" "A factor that affects the erythrocyte sedimentation rate (ESR) is:
red cell count
red cell size
plasma factors
technical and mechanical factors
All of the above - CORRECT ANSWER All of the above" "Which of the following is NOT tested in clinical hematology?
Red blood cells
White blood cells
Platelets
Solutes in plasma - CORRECT ANSWER solutes in plasma" "Paraffin sections:
must be dewaxed prior to staining
have xylene removed by Scott's water
will have blotchy staining if they are not left in dewaxing sylenes for minimum 1 hour
do not require cover slipping - CORRECT ANSWER must be dewaxed prior to staining" "The fixative in containers should be:
added after tissue is added
only added to tissue if it cannot be delivered to the lab immediately
5-10 times the size of the tissue
added prior to adding tissue - CORRECT ANSWER added prior to adding tissue" "The chemical involved for fixation is:
neutral buffered formalin
xylene
paraplast
increasing strengths of alcohol - CORRECT ANSWER neutral buffered formalin" "The chemical involved in dehydration is:
neutral buffered formalin
xylene
paraplast
increasing strengths of alcohol - CORRECT ANSWER increasing strengths of alcohol" "The chemical involved in clearing is:
neutral buffered formalin

Standard Deviation x 100 / Standard Error
Mean x 100 / Standard Deviation
Standard Deviation x 100 / Mean
Variance x 100 / Mean - CORRECT ANSWER Standard Deviation x 100 / Mean" "Most fixatives act by:
precipitating calcium ions in cells
precipitating cell wall
precipitating carbohydrates in cells
precipitating enzymes in the cells
none of the above - CORRECT ANSWER precipitating cell wall" "A Westergren tube is used for which test procedure?
prothrombin time
hematocrit
platelet count
erythrocyte sedimentation rate
reticulocyte count - CORRECT ANSWER Erythrocyte Count" "Which of the following is the best examples of homeostasis?
sexual reproduction
growth
regulation of body temperature
growth of hair under arms
storage of fat as adipose - CORRECT ANSWER Regulation of body temperature" "A Gaspack/candle jar can be used to produce:
an aerobic environment
an anaerobic environment
more vacuum
a vacuum
two of the above - CORRECT ANSWER An Anaerobic Environment" "Exchange of Oxygen and nutrients take place via:
lymphatic vessels
arteries
arterioles
capillaries
venules - CORRECT ANSWER Capillaries" "The range of pH is:
1-
1-

0-14 - CORRECT ANSWER 0-14" "A pH of 2 is _________ a pH of 5
1000 times less acidic than
100 time more acidic than
2 times less acidic than
20 time less acidic than
1000 times more acidic than - CORRECT ANSWER 1000 Times more acidic than" "A blood glucose is preferred to be done on:
a whole blood using sodium citrate
clotted blood
whole blood using oxalate and sodium fluoride as an anticoagulant
a finger prick specimen
urine - CORRECT ANSWER Whole blood using oxalate and sodium fluoride as an anticoagulant" "What is the name give to a substance that kills disease causing microorganisms but not spores and is used on inanimate object?
disinfectant
antiseptic
antibiotic
fungicide - CORRECT ANSWER Disinfectant" "Tissues are generally embedded in paraffin wax so that they may be:
decalcified
cut into sections
dehydrated
fixed
stained - CORRECT ANSWER Cut into Sections" "A patient asks you to tell him his test results.. You should,
ask him to check with his physician
tell him the results are not ready
tell him his results
refuse to discuss the subject
only tell him if results are normal - CORRECT ANSWER Ask him to check with his physician." "A plasma protein involved in clotting is:
immunoglobulin
gamma globulin
albumin

"The layer above a sediment in a solution is the:

supernatant
solution
suspension
buffy coat - CORRECT ANSWER Supernatant" "Beta hemolysis causes:
a green discoloration around colonies on blood agar(alpha)
a completely clear zone around colonies on blood agar
the death of bacteria
normal autolysis of blood cells
none of the above (gamma = no changes in agar) - CORRECT ANSWER A completely clear zone around colonies on blood agar" "Stool concentration method concentrates which of the following:
parasites
ova
white blood cell
red blood cells
all of the above
a and be are correct - CORRECT ANSWER a and b are correct" "To properly autoclave a small load of waster or equipment, the autoclave should be set at:
121°C for 50 minutes at 15 p.s.i.
130°C for 30 minutes at 30 p.s.i.
121°C for 15 minutes at 15 p.s.i.
121°C for 30 minutes at 15 p.s.i
121°C for 20 minutes at 20 p.s.i. - CORRECT ANSWER 121°C for 15 minutes at 15 p.s.i." "Which of the following acids is not to be used for decalcifiation?
formic acid
nitric acid
hydrobromic acid
all of the above can be used
none of the above can be used - CORRECT ANSWER Hydrobromic acid" "Tissues are fixed to:
prevent changes in cellular morphology
facilitate staining
allow tissues to be examined in a life-like condition
all of the above - CORRECT ANSWER All of the above"

"A solution that has a solute concentration equal to that in a cell is described as:

hypertonic
hypotonic
hydrostatic
osmotic
isotonic - CORRECT ANSWER Isotonic" "Which of the following in urinalysis may indicate a urinary tract infection?
presence of WBC
presence of pH
presence of Nitrite
both a and c
all of the above - CORRECT ANSWER Both a and c" "WHMIS stands for:
Workplace Harmful Materials and Industrial Safety
Workplace Hazardous Materials Information System
Workplace Hazardous Material and Information System
Workplace Hazardous Management of Industrial Systems - CORRECT ANSWER Workplace Hazardous Materials Information System" "Media refers to:
away from the center of the body
toward the center of the body
toward the head
toward the feet
none of the above - CORRECT ANSWER Towards the center of the body" "In blood culture collection, these procedures are followed except:
the specimen is kept at room temperature, not refrigerated
an arterial sample is drawn
an anaerobic and aerobic bottle are drawn if possible
the blood culture is always drawn first
tincture of iodine or proviodine are used an antiseptic - CORRECT ANSWER An arterial sample is drawn" "If the name of a bacterium ends in coccus, then its shape is:
rod-shaped
spiral
spherical
short and slender
short rod, slightly rounded - CORRECT ANSWER Spherical"

any glucose levels will fall
any red or white blood cells will lyse
all of the above - CORRECT ANSWER All of the above" "Which of the following tubes would be used for a cholesterol level determination?
heparin
EDTA
SST
citrate
oxalate - CORRECT ANSWER SST" "The term for the presence of bacteria in the blood is:
meningitis
septicemia
anemia
bacteremia - CORRECT ANSWER Bacteremia" "In urinalysis, a confirmatory test for urine protein would be:
acetest (ketones)
clinitest (glucose-sugar)
hematest (fecal occult blood)
SSA test
Ictotest (bilirubin)
unneccessary - CORRECT ANSWER SSA test (for proteins)" "NaCl is added to distilled water in a container. What term would you use to identify the distilled water?
solvent
solute
reagent
solution
mixture - CORRECT ANSWER Solvent" "The shape of a normal erythrocyte is called:
a biconcave disk
spherical
columnar
muffin shaped
none of the above - CORRECT ANSWER A biconcave disk" "If blood is collected in a green top tube, when centrifuged it will separate into:
serum and clot
plasma and clot

serum, buffy coat, and clot
plasma, buffy coat, and red blood cells
plasma, buffy coat and clot - CORRECT ANSWER Plasma, buffy coat, and red blood cells" "The purpose of heat fixing a bacterial smear is to:
cause the cells to absorb stain more readily
prevent cells from washing off the slide
provide a warm temperature for cells to grow
make cells visible under the microscope
all of the above
a, b, and d are correct - CORRECT ANSWER a, b, and d are correct" "ADH (antidiuretic hormone/vasopressin) stimulates reabsorption of:
sodium ions
hydrogen ions
water
chloride ions
potassium ions - CORRECT ANSWER Water" "Decalcification takes place:
before fixation
after fixation
after embedding
to sections prior to staining - CORRECT ANSWER After fixation" "Insulin is:
a glucose regulating hormone
produced in the pancreas
produced in the islets of Langerhans
all of the above
both a and c - CORRECT ANSWER All of the above" "They hydrogen ion potential is also known as:
S.G.
pH
p.s.i.
S.I. - CORRECT ANSWER pH" "Which of the following is used to embed tissues sample after processing?
permount
paraffin
xylene
EDTA
dry ice - CORRECT ANSWER Paraffin"

"The name of a disease is the:

prognosis
signs
symptoms
diagnosis
etiology - CORRECT ANSWER Diagnosis" "Which is not a "controlled products" under WHMIS regulations?
oxidizing materials
compressed gases
radioactive materials
poisonous materials - CORRECT ANSWER Radioactive materials" "Which government regulation control "Specimen Collection Act"?
regulation 862
regulation 682
regulation 860
regulation 628 - CORRECT ANSWER Regulation 682" "Identify the TRUE statement.
MLA's are regulated under regulation 682
MLA's are regulated under 862
MLA's are regulated if they work under a technologist
MLA's are not regulated under regulation 682 - CORRECT ANSWER MLA's are not regulated under regulation 682" "A normal standard on an ECG tracing should be:
5 mm high
10 mm high
20 mm high
2 mv - CORRECT ANSWER 10 mm high" "The carotid arteries carry blood to the:
lungs
myocardium
brain
liver - CORRECT ANSWER Brain" "Why is an infant's head circumference measured?
to use the information to calculate height
to use the information to calculate the weight
to get information about brain development

to get information about body development - CORRECT ANSWER To get information about brain development" "If a patient has an IV in the right arm and hematoma on the left arm, the blood can be taken from?
right arm
left arm
back of right hand
if the right hand is not available, go under the IV location (canula) 2 inches
neck veins
c and d are correct - CORRECT ANSWER c and d correct" "What test is mostly affected by hemolysis?
Na
Cl
K
Fe - CORRECT ANSWER K- potassium" "CSF sample can be divided into how many tubes:
4
3
2
1
all of the above
a and b are correct - CORRECT ANSWER a and b are correct" "Alcohol blood test for driver under police request is considered:
hazardous materials
toxic sample
TDG Act 1992
Chain of Custody - CORRECT ANSWER Chain of custody" "TDG Act 1992, discuss how many classes?
5 classes
7 classes
9 classes
3 classes - CORRECT ANSWER 9 classes" "RHPA will not allow an individual to use the title "Doctor/Dr." unless person is:
belongs to a college
certified by CPSO
can perform few controlled acts
all of the above - CORRECT ANSWER All of the above" "If you think you have mixed two specimens, you should:

"The presence of bile pigment in the urine causes the specimen to be:

light amber in color
foul-smelling
brown
green - CORRECT ANSWER Light amber in color - jaundice" "Blood is present in the urine due to:
trauma
infection of glomerulus
menstruation
all of the above - CORRECT ANSWER All of the above" "The professional that can order blood test include:
a medical doctor, nurse
a lab technician
homeopathic doctor
a PhD doctor - CORRECT ANSWER a Medical doctor, nurse" "Glassware used to measure 24 hour urine volumes is a:
volumetric flask
beaker
erlenmeyer flask
graduated cylinder
safety bulb - CORRECT ANSWER Graduated Cylinder" "Glassware used to make 100 ml of a 12% solution is a:
volumetric flask
beaker
erlenmeyer flask
graduated cylinder
safety bulb - CORRECT ANSWER Volumetric Flask" "A suction device used to draw up liquids is a:
volumetric flask
beaker
erlermeyer flask
graduated cylinder
safety bulb - CORRECT ANSWER Safety Bulb" "Which piece of glassware would not give critical measurements?
volumetric flask
beaker
micropipette
serological pipette

mohr pipette - CORRECT ANSWER Beaker" "The durable material used to make heat resistant glass ware is?
polyethylene
soda lime
polystyrene
borosilicate
polyvinyl chloride - CORRECT ANSWER Borosilicate" "Solid crystal of potassium oxalate are added to distilled water in a container. What term would describe the potassium oxalate?
solution
solvent
solute
reagent
a and c are correct - CORRECT ANSWER Solute" "The destruction of all microorganisms including all spores is called:
sanitation
antisepsis
sterilization
disinfection
asepsis - CORRECT ANSWER Sterilization" "A ug is a unit to describe:
time
volume
distance
weight
length - CORRECT ANSWER Weight" "Cells in a hypertonic solution will:
swell and burst
dehydrate
hemolyze
not be affected
stop mitosis - CORRECT ANSWER Dehydrate" "The solution used to fix pap smears is:
wright's stain
hematoxylin
physiological saline
cytospray
methylene blue - CORRECT ANSWER Cytospray"

"Which test could not be performed on a serum sample?

IRON
vitamin b
total lipids
clotting factors
potassium - CORRECT ANSWER Clotting factors" "The shape of a normal erythrocyte is described as a:
biconcave disk
spherocyte
polymorphonucleocyte
thin column
bull's eye - CORRECT ANSWER Biconcave disk" "Glucose results are currently reported in:
g/mol
mmol/L
g/L
g/ml
g/dL - CORRECT ANSWER mmol/L" "If a patient refuses to have a veniouncture done you should:
tear up the requisition
collect a urine specimen
politely ask the patient to come back next week
restrain the patient and proceed with the venipuncture
notify the patient's physician - CORRECT ANSWER Notify the patient's physician" "Which statement is false when performing a venipuncture?
the vein is entered at a 15-20 degree angle
the tubes are pushed onto the needle with the thumb of the strongest hand
the bevel of the needle is pointed up when entering the vein
the tourniquet is removed before withdrawing the needle
the patient's arm is cleansed before palpating the vein - CORRECT ANSWER The patient's arm is cleansed before palpating the vein" "A biohazardous container is used to discard:
Lancets
needles
band aid wrappers
all of the above
a and b are correct - CORRECT ANSWER a and b are correct" "Which needle gauge corresponds with the smallest needle size?

18 gauge
20 gauge
21 gauge
22 gauge
23 gauge - CORRECT ANSWER 23 gauge" "The vacutainer tube which is used to collect and separate serum is the:
red
green
lavender
light blue
SST - CORRECT ANSWER SST" "If a lavender top, plain red top, grey top and light blue top tubes are collected, what is the order of draw?
they can be collected in any order
plain red top, lavender, light blue, grey
light blue, plain red top, lavender, grey top
grey, light blue, lavender, plain red top
plain red, light blue, lavender, grey - CORRECT ANSWER light blue, plain red top, lavender, grey top" "If the patient faints during a venipuncture, you should:
call the physician at once
remove the needle and attend to the patient
yell loudly at the patient to keep him conscious
continue the procedure until all blood is collected
start artificial respiration immediately - CORRECT ANSWER Remove the needle and attend to the patient" "What vein/s is not used to obtain a venous blood specimen?
basilic vein
cephalic vein
median cubital vein
femoral vein
veins on the back of the hand - CORRECT ANSWER Femoral vein" "A blood specimen collected in a heparinized tube is centrifuged. It will separate into:
serum and clot
plasma and clot
serum and plasma
plasma, buffy coat, RBC - CORRECT ANSWER Plasma, buffy coat, RBC" "Hemolysis may result from:
using a gauge needle on an adult

MLPAO EXAM SET OVER 1000 UPDATED QUESTIONS AND ANSWERS, Exams of Laboratory Practices and Management

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Download MLPAO EXAM SET OVER 1000 UPDATED QUESTIONS AND ANSWERS and more Exams Laboratory Practices and Management in PDF only on Docsity!

MLPAO EXAM SET

OVER 1000 UPDATED QUESTIONS AND ANSWERS

COMPLETE VERIFIED SOLUTION100%