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Glossary of Blood System - Chapter 13 - Laboratory Tests

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antiglobulin test (Coombs test)
test for the presence of antibodies that coat and damage erythrocytes
bleeding time
time required for blood to stop flowing from a tiny puncture wound
coagulation time
time required for venous blood to clot in a test tube
erythrocyte sedimentation rate (ESR or sed rate)
speed at which erythrocytes settle out of plasma
complete blood count (CBC)
determination of the number of red and white blood cells, platelets, hemoglboin, hematocrit, and red cells indices - MCH, MCV, MCHC
hematocrit (Hct)
percentage of erythrocytes in a volume of blood
hemoglobin test (H, Hg, HGB)
total amount of hemoglobin in a sample of peripheral blood
partial thromboplastin time (PTT)
measures the presence of plasma factors that act in a portion of the coagulation pathway
prothrombin time (PT)
test of the ability of blood to clot
red blood cell count (RBC)
number of erythrocytes per cubic millimeter or microliter of blood
red blood cell morphology
microscopic examination of a stained blood smear to detemrine the shape of indivudal red cells
white blood cell count (WBC)
number of keukocytes per cubic millimeter or microliter
white blood cell differential
detemrines the % of the total WBC made up by different types of leukocytes
apheresis
separation fo blood into component parts and removal of a select part from the blood
blood transfusion
whole blood or cells are taken from a donor and infused into a patient
bone marrow biopsy
microscopic examination of a core of bone marrow removed with a needle
hematopoietic stem cell transplant
peripheral stem cells froma compatible donor are administered into a recipient's vein

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