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Glossary of Hematology MLT

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Created by tnglasco

The entire ruled area of a hemacytometer is
9 sq mm
The normal white count for both male and female is
5,000 to 10,000 per cu mm
Normal Leukocyte values:

Infants
Children
Adults



Infants 10,000-22,500 cu mm
Children 8,000-11,000 cu mm
Adults 5,000-10,000

An immature lymph is larger than a mature lymph
true

The higher the white count, usually the higher the granulocyte count.
True
The lymphocyte count in infants is usually quite h
i
The lymphocyte count in infants is usually quite high
True

Count is usually 10,000-22,500 cu mm

One cannot identify a reticulocyte in a Wright stained blood film.
True

First stain with the vital stain new methylene blue or brilliant cresyl blue. Precipitated RNA

A bacterial infection is usually accompanied by
leukocytosis
Define Leukocytosis
An increase in number of leukocytes (More than 10,000 cells per cubic millimeter) in the blood.
The term hematology comes from?
The Greek words hema, meaning blood, and logos meaning discourse or study.
Granulocytes originate in the
bone marrow
Granulocytes:
Neutrophils
Eosinophils
Basophils

Non-granulocytes are formed in the
Spleen and lymphoid tissue.

Lymphocytes
Monocytes
Plasmacytes



The reticulocyte dose not have a nucleus.
True
Synonym for a blood platelet is
Thrombocyte
A white cell count below 4,000 cells is referred to as
Leukopenia
Hemohistioblast is the stem cell from which all white blood cells originate.
True
The packed red blood cell volume is an accurate and important procedure in determining the degree of
anemeia or polycythemia
Basophilic stippling is not a characteristic of a erythrocyte
It is an abnormal red cell inclusion
The dilution of a white blood cell pipette is
1 to 20
The dilution of a red blood cell pipette is
1 to 200
The distance between the cover slip and counting chamber is
1/10 mm
The red color and iron part of the blood is called
hemoglobin
Anisocytosis
variation in size
Hypochromia
deficiency in hemoglobin
Microcytic
Small red blood cells
Normocytic
normal-sized red blood cells
Polycythemia
A high (above normal) RBC, hemoglobin and hematocrit.
The entire counting chamber is
9 sq mm
The dilution in a white blood cell pipette is
1-20
The distance between the cover slip and counting chamber
1/10 mm
The red blood cell area of the counting chamber measures
1 sq mm
The actual red blood count is performed on
1/5 sq mm
The correction factor for a white lood cell count is
50
The normal white blood cell count for adults is
5,000 to 10,000 cu mm
The normal value for hematocrits for male adults is
40 to 50%
The rubriblast is an immature
red blood cell
All cells originate from hemohistoblast in the bone marrow and is referred to as a
stem cell
When blood cells become inactive and are broken down by the reticuloendothelial system, one of the products that is formed is
bilirubin
The normal values for Wintrobe sed rates are
0-10 mm males
0-20 mm females
A normal hemogloin value for a male is
14.0 grams

Normal range is 13.0-16.0 grams (depending on procedure)

Polycythemia is an increase in
hemoglobin and volume of packed red blood cells (hgb and pRBCs)
An increase in granulocytes is termed a
shift to the left
One method of doing a platelet count is
Rees-Ecker
Eosinophils are elevated during
allergy
Granulocytes are elevated in
bacterial diseases
Eosinophils are elevated in certain stages of
parasitic infections
The iron part of the blood that gives it the red color is
hemoglobin
Westergren is a method of
sed rate
Myeloblasts are normally found in the
bone marrow
There is an increase in lymphocytes with
mononucleosis
target cells are abnormal red blood cell
true
Megakaryocytes are
platelet producing cells
An immature red blood cell that stain blue
polychromatophils
The approximate normal ratio of granulocytes and non-granulocytes in adults is
granulocytes 60-70%
non-granulocytes 30-40%
To performe a reticulocyte count you
u
To performe a reticulocyte count you use methylene blue or brilliant cresyl blue know as vital stains.
True
The white blood cells area of a counting chamber is
4 sq mm
Plasma cells are increased in
multiple myeloma
Granulocytes are usually elevated during
bacterial infections
Lymphocytes are elevated during
viral infections
Blast cells are generally only found in the perigeral smear during
acute leukemia
A reticulocyte is a y
o
A reticulocyte is a young red blood cell
true
A stem cell is called a
hemohistioblast
The megakaryocyte is the stem cell for the
thrombocyte series
Platelets have a short survival time in the peripheral blood.
3-5 days
Define blood
a fluid in which cells are free and suspended.
Hemoglobin
contained in the mature red blood cells (erythrocytes). Is what gives blood its red color and is responsible for the exchange of oxygen and carbon dioxide.
Macrocytic
large red blood cells
Poikilocytosis
variation in the shape of the red blood cell
Target cell
found in various hemolytic anemias such as Heoglobin C disease, Sickle Cell, and Thalassemia. They
The dilution of th
e
The dilution of the red blood cell pipette is
1-200
Red Blood Cell Indicies
MCV= hct x 10/RBC 82-92 fl

MCH= hgb x 10/RBC 27-31 pg

MCHC= hgb x 100/hct 32-40%



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