Latest 2026 UPDATED Exam Questions
and Verified Answers (2026/2027) |
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Perks of automation
Speed, accuracy, precision, requires small blood volume
Perks of manual
Low cost, good for low work volume, fewer artifacts and spurious results
automated cell counting
includes electrical resistance (counting cells by observing flow of electricity) and
flow cytometry (cells in narrow tube detected by laser)
Impedance
Detects and measures changes in electrical resistance between two electrodes as
cells pass through a sensing aperture
frequency distribution graphs
Measurable voltage changes are plotted on?
Light Scatter
Blood is hydrodynamically focused by sheathing fluid which moves cells forward
to the center of the column
single file
How do cells pass through the optical detectors in light scatter?
The degree and nature of the light scatter
, Light scatter measurement is based on
The degree and nature of the light scatter
WBC histogram
provides a means of comparing the size and population of a patient's WBCs with
normal population and is used as a screening tool to detect the presence of
hematologic diseases
35-90 fL on a WBC histogram
Lymphs
90-160fL on WBC histogram
Mononuclear cells such as monocytes, blasts, immature granulocytes, and
reactive lymphs
160-450fL on WBC histogram
Granulocytes
RBC histogram
reflects the normal size of erythrocytes or any other particles in the erythrocyte
size range and will coincide directly with the MCV
>36fL
Particles ___________ in RBC chamber are counted
>36fL
Platelet Histogram
illustrates the size of the platelets and helps identify the giant platelets and
thrombocytopenia
2-20fL
Particles between ________ are considered in the platelet histogram
All platelets while excluding small red cells