LabTech

6/8/99

CBC (Complete Cell Count)

• Battery of tests
• Hematocrit--% of red cells—put blood in tube, spin it down, RBCs go to the bottom, normal range is 36-53%
• Not enough red cells is anemia (not enough O2 carrying ability)
• Females is a little lower than males
• Cytocrit--% of cells
• Hemoglobin—measured by the amount of light it absorbs, varies w/[hemoglobin]
• Cyannet hemoglobin—combination that is actually measured, hemoglobin would bind O2 in the air which would give a different ready, the binding of cyanide is different giving a better ready
• Normal is 12-18g/dL
• DL (deciliter)—1/10 L, 100mL, 100cc

• RBC count
• 4-6 x 10⁶ /microL (1 millionth of a liter) (1 thousandth of a mL)

• RBC indices
• MCV—mean volume of the average RBC
• 10^-15 fL
• normal size—normocytic
• macrocytic—larger than normal
• microcytic—smaller than normal
• need to understand formula
• 1L of blood
• pico grams

Platelet

• 2-4 x 10 5 /microL

WBC

• neutrophils
• lymphocytes
• monocytes
• eosinophils
• basophils
• neutrophils

for exam hemocytometer

• device for counting blood cells manually

H/H

15g/dL—45% hematocrit—RBC count 5x10⁶

Rule of 3