hematocrit Flashcards
1
Q
the volume of packed RBC that occupies a given volume of blood
A
HCT or Packed cell volume
2
Q
Reported as
A
% or L/L
3
Q
anticoagulant
A
EDTA OR HEPARIN
4
Q
A
5
Q
seal with ___ at least ____
A
clay, 4mm long
6
Q
Centrifuge for ___ between speed of ____
A
5 minutes, 10,000 xg-15,000xg
7
Q
Two methods
A
Macrohematocrit
Microhematocrit
8
Q
Macrohematocrit uses
A
wintrobe tube
9
Q
microhematocrit use
A
capillary tube
10
Q
A
11
Q
Male
A
40-54% (0.40-0.54 L/L)
12
Q
female
A
35-49% (0.35-0.49 L/L)
13
Q
newborn
A
53-65% (0.53-0.65 L/L)
14
Q
child
A
30-43% (0.30-0.43 L/L)
15
Q
Falsely Decrease
A
• Incomplete sealing of tubes.
• Hemolysis
• Overanticoagulated Blood
16
Q
Falsely Increased
A
• Reading including the buffy coat
• Inadequate centrifugation
• Abnormal RBC Morphology: Macrocytic Anemia, Spherocytosis, Thalassemia, Hypochromic Anemia, Sickle Cell Anemia
17
Q
A
18
Q
A
