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Tests & Imaging > Labs >

Complete Blood Count

Last update: 03/10/2014

TOPICS
RBC (Red blood count) | HGB (Hemoglobin) | HCT (Hematocrit)  |
 MCV (Mean Corpuscular Volume) | MCH (Mean Corpuscular Hemoglobin) |
 MCHC (Mean Corpuscular Hemoglobin Concentration) |
RDW (Red Cell Distribution Width) | Platelets | MPV (Mean Platelet Volume)

 
WBC - Neutrophils | Lymphocytes | Monocytes | Eosinophils | Basophils 

Peripheral Blood Reference Range Chart PDF

Your doctor will sometimes schedule a Complete Blood Count (CBC) blood test to monitor your health,  watch for indirect indications of disease direction, and side effects of treatment.

Reference ranges and unit measurements can vary per lab. 
And what is "normal" can also vary per person and race. 

If your lab results are outside the normal range, we suggest that you discuss with your doctor.  Often it is not the result, but the change from a previous test that is most instructive. For best comparisons of lab results, the tests should be done in the same lab. 

Resources: 

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About Blood Tests PAL
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About AIDSMeds  | Bloodbook | Biologics | LLS
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PAL's Peripheral Blood Reference Range Chart  PDF
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Family Practice Notebook fpnotebook
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Labtests online http://labtestsonline.org/
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NIH: Understanding your Complete Blood Count cc.nih.gov PDF  

This information was developed to help you understand your complete blood count and describe neutropenia, anemia, and thrombocytopenia.


RBC - Red blood cells
(erythrocytes - eh-REETH-ro-site)    

Ref.  Range 4.20 - 5.70 

Cells that deliver oxygen throughout the body and make blood look red. 

A low RBC can indicate anemia, which can lead to fatigue. 

Topic Search: details and implications: Family Practice Notebook
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Peripheral Blood Reference Range Chart PDF

 

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HGB - Hemoglobin 
(HE-muh-glow-bin)     

Ref.  Range 13.2 - 16.9   

Hemoglobin is a protein used by red blood cells to distribute oxygen to other tissues and cells in the body.  Low levels indicate anemia.

Topic Search: details and implications: Family Practice Notebook
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Peripheral Blood Reference Range Chart PDF

 

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HCT - Hematocrit 
(he-MAH-to-crit)   

Ref.  Range 38.5 - 49.0%    

Percent of  your blood that is occupied by red blood cells. Good indicator of anemia.

Topic Search: details and implications: Family Practice Notebook
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Peripheral Blood Reference Range Chart PDF

 

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MCV - Mean Corpuscular Volume

Ref.  Range 80 - 97   

Measures the size of red blood cells. Larger or smaller than normal red blood cells may indicate anemia.  

Topic Search: details and implications: Family Practice Notebook
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Peripheral Blood Reference Range Chart PDF

 

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MCH - Mean Corpuscular Hemoglobin

Ref.  Range 27.5 - 33.5  

Measures the amount of hemoglobin in red blood cells. Both hemoglobin and hematocrit are used to calculate this number. Low levels indicate anemia.

Topic Search: details and implications: Family Practice Notebook
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Peripheral Blood Reference Range Chart PDF

 

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MCHC - Mean Corpuscular Hemoglobin Concentration

Ref.  Range 32.0 - 36.0% 

Measures the amount of hemoglobin in red blood cells. Both HGB and HCT are used to calculate this number. Low level indicates anemia.

Topic Search: details and implications: Family Practice Notebook
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RDW - Red Cell Distribution Width

Ref.  Range 11.0 - 15.0

Measures the range of sizes of red blood cells in a blood sample. RDW results are often used together with MCV results to determine possible cause of anemia when anemia is indicated by other test results.

Topic Search: details and implications: Family Practice Notebook
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Peripheral Blood Reference Range Chart PDF

 

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Platelets Count    

Ref.  Range 140,000 - 390,000 (mm3)

Platelets are cells produced by the bone marrow to help your blood clot in order to stop bleeding from injury. Decreased platelet count is called thrombocytopenia.  

Topic Search: details and implications: Family Practice Notebook
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Peripheral Blood Reference Range Chart PDF

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MPV - Mean Platelet Volume 

Ref.  Range 7.5 - 11.5

Measures the average volume (size) of your platelets.  Higher-than-normal MPV is associated with an increased risk of heart attacks and stroke.

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Peripheral Blood Reference Range Chart PDF

 

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WBC - White Blood Cell (leukocytes)

Ref.  Range 3,900 - 10,000  (mm3)

Measures the amount of white blood cells. These immune cells  form  in the bone marrow to help fight infection.  High levels may indicate infection. Low levels may result from treatment or disease.  

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Peripheral Blood Reference Range Chart PDF

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Differential

Information on specific types of leukocytes

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About Differential rnceus.com
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About WBC Lab Tests online | Medline Plus  
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Peripheral Blood Reference Range Chart PDF

 

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Neutrophils

Ref. Range between 38% and 80% of the WBC

Most common granulocyte (55-70% of all leukocytes are neutrophils) Attracted to sites of injury and infection. Percentage is often increased during a bacterial infection. A low number (neutropenia) increases risk of  bacterial infection.  Multiplying the percentage of neutrophils by the total number of white blood cells will give the "absolute" number of these types of cells.

Neutrophil Count (Absolute)      Ref. Range 1.8 - 7 (x1-3uL)
Topic Search: details and implications: Family Practice Notebook
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Peripheral Blood Reference Range Chart PDF

 

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Lymphocytes %

Ref. Range between 15% and 40% of the WBC

Include T-cells, B-cells, and natural killer (NK) cells. 

Viral infections may  increase their number. 

Lymphocyte Count (Absolute)    

Ref. Range 1000 - 3500

Multiply the Lymphocytes% above by the total number WBC

Topic Search: details and implications: Family Practice Notebook
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Absolute lymphocyte count predicts overall survival in follicular lymphomas.
Br J Haematol. 2006 Sep;134(6):596-601. Epub 2006 Aug 1.
PMID: 16889618 
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About low lymphocyte counts: nhlbi.nih.gov/
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Google Topic Search
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Monocytes

Ref. Range 0.0 - 13.0

Monocytes are a type of phagocyte. These mature into macrophages, important germ eating cells. A low number can put you at a higher risk of getting sick from an infection, particularly those caused by bacteria. 

Monocyte Count (Absolute)

Ref. Range 40 - 900

Multiply Monocytes%  by the WBC
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Eosinophils %

Ref. Range 0.0 - 8.0

A  type of phagocyte that produces the anti-inflammatory protein histamine. 

A high number indicates allergies or parasitic infections. 

Eosinophil Count (Absolute)

Ref. Range 30 - 600 

Multiply Eosinophils% by the WBC

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Basophils %

Ref. Range 0.0 - 2.0

Control inflammation and damage of tissues in the body.

Basophil Count (Absolute)

Ref. Range 40 - 900

Multiply Basophils%  by the WBC

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Disclaimer:  The information on Lymphomation.org is not intended to be a substitute for 
professional medical advice or to replace your relationship with a physician.
For all medical concerns,  you should always consult your doctor. 
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