[memory]

There is a sentence in Goljan that goes "A relative increase in leukocytes is an increase in the percentage of cells without a corresponding increase in the absolute number."
The absolute count is basically with respect to a particular subset of the leukocytes. Absolute count is percentage of a specific subset of cellsX the TLC.
Please explain how this is possible.

 

[khanar]

Absolute count means how many particular cells you have in micro liter.
Relative count means what percentage of a particular cells you have out of the total population of cells.

Example:
Total WBC count is 10,000 per micro liter (absolute count)
60& Neutrophils, 30% Lymphocytes, 5% Eosinophils, 4% Monocytes, 1% Basophils.
To determine the absolute count of lymphocytes for example you multiply 10,000 X 30% = 3,000 lymphocytes in micro liter (absolute count).
Determination of the absolute count via calculation of the automated results like above is not very accurate. Therefore, they may count them manually in the lab for example in cases of neutropenia where 1000 cell is the cut off for the definition of neutropenia.

 

[memory]

Absolute count means how many particular cells you have in micro liter.
Relative count means what percentage of a particular cells you have out of the total population of cells.

Example:
Total WBC count is 10,000 per micro liter (absolute count)
60& Neutrophils, 30% Lymphocytes, 5% Eosinophils, 4% Monocytes, 1% Basophils.
To determine the absolute count of lymphocytes for example you multiply 10,000 X 30% = 3,000 lymphocytes in micro liter (absolute count).
Determination of the absolute count via calculation of the automated results like above is not very accurate. Therefore, they may count them manually in the lab for example in cases of neutropenia where 1000 cell is the cut off for the definition of neutropenia.

hi, KaleKaleo. thanks for the explanation.