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CSMLS MOCK EXAM Questions and Answers 100% Pass | Latest Update
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CSMLS MOCK EXAM Questions and Answers 100% Pass | Latest Update What is a CBC ? - Complete Blood Count, an evaluation of formed elements of blood , RBCs , WBCs and platelets . EDTA whole blood maintains the cell's shape and size. preventing blood from clotting by binding by calcium What is re...

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  • September 15, 2024
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  • 2024/2025
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CSMLS MOCK EXAM Questions and

Answers 100% Pass | Latest Update


What is a CBC ? - ✔✔Complete Blood Count, an evaluation of formed

elements of blood , RBCs , WBCs and platelets . EDTA whole blood

maintains the cell's shape and size. preventing blood from clotting by

binding by calcium

What is required for blood film preparation? - ✔✔The object is to spread

the cells in monolayer without distorting them . The blood film is important

in the investigation and the management of blood cell disease

What is unique about the thickness of blood film ? - ✔✔If the Hb is

increased , the angle of the spreader should be decreased. If the Hb is

decreased the angle of the spreader should be increased

What are the features of a well made blood film ? - ✔✔Correct size drop of

blood

Film is 2/3 of the length of the slide

Film is finger shaped with a slightly rounded feathered edge

Angle of the spreader should be 35 degrees

,Film is smooth with no holes or streaks

What are the steps required when staining and fixing a blood film ? -

✔✔Allow blood film to dry completely before staining. Do not blow dry as

moisture from breath will cause RBC artifact. Methanol is thge fixative of

choice , stain has methanol. Timing and pH are critical

What are coagulation tests? - ✔✔Plasma is required. Citrate is the

anticoagulant of PT + PTT. Sodium citrate binds to calcium preventing

coagulation. Tubes must be drawn full capacity

What is Hemoglobinopathy? - ✔✔Abnormal chain of Hb

What is Thalassemia ? - ✔✔Failure to produce alpha or beta chains

What is the Hb Normal value for Infants ? - ✔✔160 - 230 g/L

What is the Hb Normal value for a Toddler ? - ✔✔> 100 g/L

What is the Hb Normal value for a male? - ✔✔140-180 g/ L

What is the Hb Normal value for a female ? - ✔✔120- 160 g/L

What are the critical Hb values ? - ✔✔Low < 60 g/L , causes bleeding /

heart failure

High > 200 g/L polycythemia, severe burns, chronic obstructive pulmonary

disease and CHF

,What is Hematocrit? - ✔✔Also called PCV. Micro Hct is the volume of

RBCs after centrifuging whole blood for 5 minutes @ 12, 000 rpm.

Comprises RBCs that are normally 40 - 50 % of blood volume. Requires a

small volume of blood. Lavender top tube, venous blood or capillary blood

collected directly into heparinized capillary tubes. SHould be centrifuged

within 4 hours of collection

What is the Hct Normal value for an infant? - ✔✔0.50 - 0.60

What is the Hct Normal value for a toddler? - ✔✔0.35 -0.42

What is the Hct Normal value for a male ? - ✔✔0.40-0.50

What is the Hct normal value for a female? - ✔✔0.35-0.50

What is the Hct Critical Values? - ✔✔< 0.20 and > 0.60

What are some of the sources of error for Hct? - ✔✔Improper sealing of

capillary tube (D) due to loss of RBCs

Increase concentration of anticoagulant (D) due to unfilled tube

Improper mixing of blood (I) or (D)

Time & speed of centrifuge (I) due to trapped plasma

Improper collection of specimen (I) or (D)

Delay in reading (I) due to packing of RBC

Buffy coat included (I)

, What is the structure of a WBC? - ✔✔Approx 10 - 20 um in diameter (2-3

size of RBC) , can count under 400 X magnification (high dry) can see

detail under 1000 X magnification (oil immersion) , cells are nucleated ,

flexible membrane variable shape, resists lysis types: granulocytes,

lymphoctyes, monocytes

What is required for the manual WBC Principle Count ? - ✔✔Dilute blood

with fluid that lyses RBCs and stains WBCs, counts the WBCs in a known

volume of blood, calculate cells / L

What is the normal value of WBC in an adult? - ✔✔4.5 -11.0 x10 9/L

What is the normal value of WBC in an infant ? - ✔✔9.0 - 30.0 x 10 9/ L

What is the critical value for WBC? - ✔✔< 1x10 9 /L and > 50 x 10 9 / L

What is the RBC Principle Count? - ✔✔Dilute well mixed EDTA blood with

isotonic fluid, count RBCs in an known volume of blood. Calculate cells/ L

What is the RBC normal value for a male? - ✔✔4.5 - 6.0 x 10 12 / L

What is the normal RBC value for a female? - ✔✔4.0 - 5.5 x 10 12/L

What is ESR ? - ✔✔Rate at which RBCs fall within a set time. Rouleaux,

fibrinogen and globulin increase ESR, high RBC some RBC shapes will

decrease ESR

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