Veterinary Hematology: CBC, PCV, Hemoglobin, and Erythrocyte Indices
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24 Terms
What does a Complete Blood Count (CBC) include?
Total RBC count, PCV, plasma protein concentration, total WBC count, blood smear examination, reticulocyte count if anemic, hemoglobin concentration, and erythrocyte indices.
What does PCV stand for?
Packed Cell Volume
What is the significance of Packed Cell Volume (PCV)?
It indicates the percentage of whole blood composed of RBCs.
What are microhematocrit tubes used for?
To measure Packed Cell Volume (PCV).
What does a dark-red layer in a microhematocrit tube indicate?
It indicates the presence of RBCs, which have high specific gravity.
What does the buffy coat in a microhematocrit tube consist of?
WBCs and platelets.
What does a clear to pale yellow fluid in a microhematocrit tube represent?
It represents plasma.
What does a cloudy plasma layer indicate?
It indicates a lipemic sample.
What does a reddish tinge in plasma indicate?
It indicates hemolysis.
What condition is indicated by a below normal PCV?
Anemia or inadequate volume of blood to anticoagulant ratio.
What condition is indicated by an above normal PCV?
Polycythemia or dehydration.
What is the functional unit of the RBC?
Hemoglobin.
What does the heme portion of hemoglobin contain?
Iron.
What are the different forms of hemoglobin?
Oxyhemoglobin, Methemoglobin, and Sulfhemoglobin.
What do erythrocyte indices help classify?
Anemia.
What does Mean Corpuscular Volume (MCV) measure?
The average size of RBCs.
How is MCV calculated?
Divide PCV by RBC concentration and multiply by 10.
What does Mean Corpuscular Hemoglobin (MCH) represent?
The mean weight of hemoglobin contained in the average RBC.
How is MCH calculated?
Divide the hemoglobin concentration by the RBC concentration and multiply by 10.
What does Mean Corpuscular Hemoglobin Concentration (MCHC) measure?
The concentration of hemoglobin in the average RBC.
How is MCHC calculated?
Divide the hemoglobin concentration by the PCV and multiply by 100.
What are normal RBC count values for canines?
5.7 - 8.5 x 10^6/µL.
What is the normal hemoglobin concentration range for felines?
10.9 - 15.7 g/dL.
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