Question

1. Which of the following statements is incorrect regarding a hematocrit:

1. a manual hematocrit is an underestimation of the true value which is obtained via the automated method
2. it is the percentage of RBCs in sample of whole blood
3. it provides an indication of the oxygen-carrying capacity of an individual
4. it is the packed cell volume divided by the volume of a whole blood sample

2. Which of the following is incorrect regarding a packed cell volume (PCV):

1. PCV is not the same thing as a hematocrit
2. a person with anemia will likely have a lower PCV than a normal person
3. if you are dehydrated, you will have a higher PCV than normal
4. blood doping leads to an increased PCV

Answer 1

Q1.Option a- a manual hematocrit is an underestimation of the true value which is obtained via the automated method .

Q2Option a- PCV is not the same thing as a hematocrit

The hematocrit -It is proportion of the blood that consists of red blood cells,which is expressed as a percentage

Manual methods pack Red blood cells by doing centrifugation. This information can be obtained by performing manual HCT direct measurement method, or by an automated hematology analyzer .

*It measures percentage of RBCs in sample of whole blood ,so it indicates oxygen-carrying capacity .

*volume of packed red cells divided by the total blood volume gives PCV.PCV is same as Hematocrit(Different names for the same thing).

*A person with anemia usually have low RBC count hence he have lower PCV.

* When dehydrated,Blood volume decreases--So have a higher PCV than normal

* blood doping increases RBC count hence increases PCV

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