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How to calculate WBC differential reference ranges in blood?

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Posted on Thu, 12 May 2016
Question: How does the lab calculate wbc differential reference ranges

What are the different percentage of each white cells

Why don't they list the percentages of each wbc on the lab results
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Answered by Dr. Hardik Sanghvi (20 minutes later)
Brief Answer:
They can be counted in automated instruments or manually.

Detailed Answer:
Hi, dear
I have gone through your question. I can understand your concern.

WBC differential count is calculated nowadays in automated cell counter. Its base on light scattering priciple. Various three part, five part, seven part and nine parts counter are available.

By manually it can be calculated in microscope from morphology or WBC. 100 cells are counted and give as value in percentage.

Normal ranges for adults are given below.

Neutrophils: 40-70%
Lymphocytes: 20-40%
Eosinophils: 1-6%
Monocytes: 2-7%
Basophils: 0-1%

Most of the laboratory gives normal range against each WBC type.

Hope I have answered your question. If you have any doubts then feel free to ask me. I will be happy to answer. Thanks for using health care magic. Wish you a very good health.
Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
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Answered by
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Dr. Hardik Sanghvi

Hematologist

Practicing since :2008

Answered : 7039 Questions

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How to calculate WBC differential reference ranges in blood?

Brief Answer: They can be counted in automated instruments or manually. Detailed Answer: Hi, dear I have gone through your question. I can understand your concern. WBC differential count is calculated nowadays in automated cell counter. Its base on light scattering priciple. Various three part, five part, seven part and nine parts counter are available. By manually it can be calculated in microscope from morphology or WBC. 100 cells are counted and give as value in percentage. Normal ranges for adults are given below. Neutrophils: 40-70% Lymphocytes: 20-40% Eosinophils: 1-6% Monocytes: 2-7% Basophils: 0-1% Most of the laboratory gives normal range against each WBC type. Hope I have answered your question. If you have any doubts then feel free to ask me. I will be happy to answer. Thanks for using health care magic. Wish you a very good health.