BLOOD: Manual Flashcards
Measure of the portion of red cells to plasma on peripheral blood but not entire circulation.
Hematocrit
Volume if packed red cells after centrifugation of blood samples.
Known as PCV
Simplest, most accurate and valuable tests in hematolgic investigationsa
Hematocrit
Normal values of hematocrit for adults:
Male:
Female:
At birth:
47 +/- 7 volume %
42 +/- 5 volume %
56 +/- volume %
Hematocrit (normal value)
Increased in:
Dec in:
Polycythemia, shock and severe dehydration
Leukemia, anemia, hyperthyroidism and cirrhosis
The pigment in the red blood cells that has affinity with oxygen
Hemoglobin
The ______ the color of the sample, the higher is the hemoglobin content
Darker
Normal value (g/100mL)
Male:
Female:
14-16.5
12-15
Is use in counting the cellular elements of the blood, namely the RBCs, WBCs and platelets
Hemacytometer
Hemacytometer consists:
Counting chamber
WBC pipet
RBC pipet
One type of counting chamber in hemacytometer
Neubauer
Number of white cells in 1 cubic millimeter of blood
WBC count
The blood which is accurately diluted with a fluid induces ______ ___________ of RBCs w/o injury to the WBCs
Complete hemolysis
Characterstics of a good WBC-diluting fluid are:
Hypotonic solution Easily prepared Cheap Readily available Good preservative
Characteristics of good RBC fluid
Isotonic sol'n High specific gravity Easy to prepare Cheap Has buffer action Does not initiate the growth of molds
Normal values of WBC Lymphocytes Monocytes Neutrophils Eosinophils Basophils
20-25% 3-8% 60-70% 2-4% 0.5-1%