Automated Blood Cell Counting Flashcards
1
Q
What does a Coulter LH 780 do?
A
- can run about 110 samples per hour
- calculates parameters for RBCs, reticulocytes, WBCs and platelets
2
Q
Define the Coulter Principle
A
states that changes in electrical resistance are produced by a particle or cell suspended in a conductive liquid traversing through a small aperture
3
Q
How else can Haematocrit be expressed
A
Packed Cell Volume
- this is expressed as a percentage where as haematocrit is expressed as a decimal
4
Q
What is the equation for HCT?
A
RBC X MCV / 1000 = HCT
5
Q
What is the equation for MCH?
A
Hb x 10 / RBC = MCH
6
Q
What is the equation for MCHC?
A
Hb/HCT OR Hb x 100/ PCV
7
Q
How must measurements of Haemoglobin be expressed?
A
grams per decilitre (g/dL)
a decilitre is 1/10th of a litre
8
Q
What are some calculated parameters of Red Cell indices?
A
- mean cell haemoglobin
- mean cell haemoglobin conc.
- haematocrit
