Complete Blood Count

Sample Type:
Sample Type
Age: 18+
Collection Method: Visit a Labcorp Location
HSA/FSA Accepted
Short Description

This CBC blood test is the first step to detecting illnesses that can affect your overall health.


Your blood is perhaps the most essential substance in your body—transporting life-sustaining nutrients, hormones and oxygen all while carrying waste products for removal through the lungs, liver and kidneys. Blood is also your body's most crucial defense against fighting infections.

This complete blood count (CBC) test counts the cells that circulate in your blood, which can provide valuable information to you and your healthcare provider about your overall health. This full blood panel may also be a first step to detecting health conditions such as anemia, inflammation, blood disorders and infection. This panel measures your red blood cells (RBCs), white blood cells (WBCs), and platelets.

Note: A CBC test is not a diagnostic test and cannot confirm any specific illness or disease. Further testing and medical consultation may be required to determine the cause of abnormal results.



No special preparation.

What's Included

Red Blood Count Measures the number of red blood cells (erythrocytes). Red blood cells contain hemoglobin, a protein that carries oxygen throughout the body.
White Blood Count

Detects the number of white blood cells (leukocytes) in the body, cells that fight off infections and foreign agents that may infect the body.


Measures the amount of hemoglobin in the blood, the oxygen-carrying protein in red blood cells.


Measures the proportion of red blood cells to the fluid component (or plasma) in your blood.

Platelet Count

Measures the number of platelets in the blood, the cell components essential for blood clotting.

Immature Granulocytes

White blood cells in an early stage of development which are not usually present in significant amounts in the blood.   


Measures the level of monocytes, the type of white blood cells responsible for breaking down germs or bacteria that enter the body. 


Measures the level of lymphocytes, the white blood cells that are vital to producing antibodies and helping the body fight against bacteria, viruses, and other threats. 


Measures the level of neutrophils, the type of white blood cells that destroy bacteria and fungi and protect the body from infections. 

Immature Cells

White blood cells in an early stage of development which are not usually present in significant amounts in the blood.  

Eosinophils Measures the quantity of eosinophils in the body, a type of disease-fighting white blood cell.
Basophils Measures the quantity of basophils in your body, a type of white blood cell produced by bone marrow that helps the body fight parasitic infections, prevents blood clotting, and mediates allergic reactions.
Mean Corpuscular Volume

Measures the average size of the red blood cells themselves. 

Mean Corpuscular Hemoglobin

Measures MCH levels, the average amount of hemoglobin found in the red blood cells in the body.

Mean Corpuscular Hemoglobin Concentration

Measures MCHC levels, the average weight of hemoglobin based on the volume of red blood cells. 

Red Cell Distribution Width

Measures the variation of size and volume of the body’s red blood cells. 

Immature Granulocytes (Absolute)
Hematology Comments:

Why Consider This Test

Proactive Prevention

Six out of 10 adults have a chronic disease and four out of 10 have two or more, but changes in lifestyle and behavior (like being more physically active or eating a healthy diet) can prevent or control many of these conditions.1

Taking Medications

In consultation with your doctor, a CMP can be used to monitor the use of certain medications to check for kidney-related or liver-related side effects.2

Healthier Habits

Having a healthy diet pattern and engaging in regular physical activity is essential for long-term health benefits and for the prevention of chronic diseases, such as Type 2 diabetes and heart disease.3


  1. “About Chronic Diseases | CDC.” Centers for Disease Control and Prevention, Centers for Disease Control and Prevention, www.cdc.gov/chronicdisease/resources/infographic/chronic-diseases.htm. Last reviewed March 8, 2019.
  2. “Comprehensive Metabolic Panel (CMP).” Understand the Test & Your Results, Lab Tests Online, American Association of Clinical Chemistry,  labtestsonline.org/tests/comprehensive-metabolic-panel-cmp.
  3. “Adult Obesity Causes & Consequences | Overweight & Obesity | CDC.” Centers for Disease Control and Prevention, Centers for Disease Control and Prevention, www.cdc.gov/obesity/adult/causes.html. Last reviewed August 29, 2017.

Packages With This Test

General Health Blood Test:

A clear view of what matters to bring your health into perspective.

Comprehensive Wellness Blood Test:

Start feeling your best with a comprehensive health blood test.

Women's Health Blood Test:

This women’s health test gives you wellness insights from the inside out.

Men's Health Blood Test:

This blood test for men offers a comprehensive look at your wellness.

Fatigue Test:

Tired of feeling tired? Investigate your chronic fatigue symptoms

How To Get This Test

Choose Your Tests
1. Choose Your Tests

Shop for tests and pay online. An independent physician will review and approve your test requests; no doctor’s visit is required.



Provide Your Sample
2. Provide Your Sample

Take the requisition number we emailed you, along with a photo ID, to a Labcorp location for sample collection.




Access Your Results Online
3. Access Your Results Online

View your easy-to-read results online in your OnDemand or Labcorp PatientTM accounts, including Linked Accounts (click here for more details). For certain results that require prompt attention, you will be also be contacted by PWN health via phone or mail.