Final Flashcards
Visible only with a microscope
Microscopic
Visible to the naked eye
Macroscopic
Distance between the specimen and outer objective lens
Working distance
The ability of a lens system to show fine details of the object being observed
Resolution
Area visible when you look through microscope
Field
Enlarging the size of something
Magnification
Used to separate liquid from solid using a high speed spinning process
Centrifuge
Liquid portion of blood
Supernatant
Solid component of a sample such as blood cells
Sediment
2 types of centrifuges
Horizontal (swing arm) and angled
Turns off centrifuge at preset time
Timer
Sets the speed of centrifuge
Tachometer
If sample is spun too long or fast
It will rupture cells and morphology
If ran too slow or not long enough
Will not separate sample
Used to count cells
Cell counter
Measure the concentration of solids in a liquid
Refractometer
When using a refractometer with urine, it measures
Specific gravity (SG)
If using a refractometer, you measure
Total protein (TP)
SG and TP are directly proportional to it’s
Conentration
Readings on the refractometer will always be
Greater than 0 (water is 0)
Specialized slide with etched grids is used to count white and red blood cells and platelets
Hemacytometer
Used to heat slides or samples
Bunsen burner
Keeps blood tubes at an even distribution
Blood rocker
Use liquid and dry reagents or slides that contain dry reagents
Blood chemistry machines
Reagent impregnated slides, pads, or cartilage
Dry system blood chemistry
Used lypholized reagent or already prepared liquid reagent
Liquid system blood chemistry
Use a bulk reagent and is most expensive
Unitized systems (vet test)
Used only if a single test is needed or emergency situations
Dedicated use analyzes
Available for use in the field
Handheld analyzer
Generates hematologist data for the CBC
Counts cells and determines hematocrit, HGB conc, and MCHC
Whole Blood Machines aka hematology machines
The temperature an incubator should be kept at
37 degrees Celsius
Platelets are also called
Thrombocytes
WBC
White blood cells
Fight infection
RBC
Red blood cells
Carry oxygen
HCT
Hematocrit
% of blood cells in a whole blood sample
MCHC
Mean corpuscular hemoglobin concentration
Amount of HGB in blood
RDW
Red cell distribution width
How wide a RBC is
Size of a canine blood cell
7 microns
Do not measure exact volumes
General glassware
Examples of general glassware
Blood tubes, Petri dish, culture tubes, Erlenmeyer flask, centrifuge tubes, beaker
Transfers, delivers, and stores exact amounts by permanently etched calibration marks
Volumetric glassware
Examples of volumetric glassware
Graduated cylinder , volumetric pipette, Pasteur pipette, volumetric flask
When testing blood, patients should fast for
12 hrs
If patient doesn’t fast the blood sample will be
Lipemic
Samples not used within an hour should be
Refrigerated
After a sample is refrigerated, it needs to be brought to _________ and mixed again
Room temperature
Collect enough blood to complete a test
3 times
Should never be frozen
Use of anticoagulant tubes is recommended
Mixed by gentle inversion
Whole blood
Fluid portion of whole blood
Plasma
Plasma is made of
90% water and 10% dissolved substances
Located between plasma and RBCs
Buffy coat
Contains WBCs and platelets
Buffy coat
Fluid portion of clotted blood
Serum
Chemicals that when added to whole blood prevent clotting
Anticoagulants
Purple top tube
EDTA
Choice anticoagulant for hematology
Used for hematologic studies because it doesn’t alter cell morphology
Blue top tube
Sodium citrate
Used in transfusion medicine and coagulation studies
Green top tube
Heparin
Used for blood pH and ammonia levels for blood chemistries
Gray top tube
Sodium fluoride/potassium oxalate
Glucose testing
Yellow top tube
Acid citrate
Used for transfusion medicines and blood cultures
Marble and red top tube
No anticoagulant
Blood transports
Oxygen and carbon dioxide Waste products Nutrients Enzymes Hormones Plasma proteins
Blood controls
Water and pH range
Blood regulates
Electrolytes
Blood is made up of
Erythrocytes Leukocytes Thrombocytes Plasma Serum
Erythrocytes are produced in
Bone marrow
Iron containing protein attached to RBCs
Hemoglobin
The body’s army
Leukocytes
5 types of Leukocytes
Basophils Eosinophils Neutrophils Lymphocytes Monocytes
Fragment cells produced by megakaryocytes
Platelets
What allows platelets to stick together?
Jagged edges
Straw colored fluid in which blood cells are suspended and helps maintain body temp, transporting BCs, and maintaining pH
Plasma
Plasma is made of
90-92% water
Plasma without fibrinogen that helps platelets clot
Serum
Measures the percent of RBCs in a whole blood
PCV
Aka hematocrit
Curved portion of plasma
Meniscus
Yellow plasma
Icterus
Seen in animals with kidney dz
Red plasma
Hemolysis
White plasma
Cloudy, lipemic
Red Buffy coat
Immature RBCs or hemolysis
If Buffy coat is thick or large it could indicate
Infection or inflammation
To seal a hematocrit tube you must use
Clay
Normal canine PCV
37-55%