Hematology Flashcards
How much blood should be drawn to run tests?
draw 3x the amount necessary to accomplish tests
What is the anticoagulant of choice for most mammals?
EDTA
What is the anticoagulant of choice for birds and reptiles?
heparin
What do you see in stress leukograms?
mature neutrophilia, monocytosis, lymphopenia, eosinopenia
What can contribute to stress leukograms?
fear, excitement, struggling, stress, treatment, restraint
When does sample degradation occur?
begins immediately after collection
What happens if a blood sample is not ran right away and if left out in room temperature?
glucose drops by 10% every hour it is not refrigerated
When do you see schistocytes?
DIC
When do you see acanthoytes?
liver dz
When do you see echinocytes?
kidney dz
When do you see spherocytes?
IMHA
When do you see stomatocytes?
liver dz
What is a poikilocyte?
irregular shaped RBC
What is the average RBC size in a canine?
7 microns
What is anisocytosis?
variation is the size of RBC
NOMRAL IN COWS
Rouleaux is normal in _____________.
horses
When is basophilic stippling seen?
lead poisoning
What does HgB assist in?
assists in acid base regulation
What is HgB measured in?
g/dL
How can you calculate HgB?
PCV/3
What does MCV measure?
cell size
What does MCH measure?
HgB weight
What does MCHC measure?
HgB concentration
What are reticulocytes?
immature erythrocytes still containing ribosomes
Cats possess ______ forms of reticulocytes.
2
What reticulocytes do cats have?
aggregated and punctated
In cats, what reticulocytes are counted?
aggregated
What is the buffy coat made up of?
WBCs, platelets, NRBCs
What is a normal buffy coat?
1-2%
In what species are platelets clumps commonly found in?
cats and cows
What is primary hemostasis?
vessel spasm and formation of platelet plug
What is secondary hemostasis?
coagulation cascade, ends in fibrin formation
What are the primary hemostatic tests?
platelet count and bleeding time
What are the secondary hemostatic tests?
prothrombin time (PT), partial thromboplastin time (PTT), PIVKA, capillary coagulation
All blood cells stem from the _________________________.
pluripotent cell
What are the five types of leukocytes?
Basophils, Eosinophils, Neutrophils, Lymphocytes, Monocytes
Which leukocytes are granulocytes?
Basophils, Eosinophils, Neutrophils
Which leukocytes are phagocytes?
Monocytes, Eosinophils, Neutrophils
Another name for a WBC count is _____________.
differential
Most abundant WBC is ___________.
neutrophil
Least abundant WBC is _____________.
basophil
What is a left shift?
band neutrophils are seen
When are basophils seen?
acute allergic reactions
Is a relative or an absolute count more important?
absolute