CBC (Complete Blood Count) Test For Blood Cell Analysis

CBC (Complete Blood Count) Test For Blood Cell Analysis

What is CBC Test

CBC (Complete Blood Count) Test is a blood test that measures various components of blood.

  • It provides information about red blood cells, white blood cells, Hemoglobin, Hematocrit, and Platelets value.
  • CBC Test helps evaluate overall health and detect infections, anemia, and blood disorders.
  • CBC test results are used to diagnose and monitor various medical conditions.


CBC Test 

Here are the basic details for the CBC Test.

Also Known As Complete Blood Count, Complete Haemogram, CBC
Type Blood Test

To evaluate blood and report counts of different blood components.

Sample Type Blood
Preparation No Special Preparation Required
Fasting No
Gender All
Age-Group Any
Normal Value Varies as Per Parameter
Reporting Time 1 - 2 hours
Cost 150 to 450* INR

*Price range may vary as per location, lab type, and procedure of lab test.


CBC Test Full Form

The full form of CBC Test is Complete Blood Count Test.


CBC Test Means

The CBC (Complete Blood Count) test is one of the most commonly done blood tests. 

  • To understand this test, it is very important to know that blood consists of two major parts: primarily plasma and cellular elements
  • This plasma is part of the blood that is liquid, which allows the blood to flow easily. 
  • The other part of the blood consists of cells.
  • The three major cells in the blood are white blood cells (WBC), red blood cells (RBC), and platelets.

Interesting Facts About CBC Test

  • The CBC (Complete Blood Count) test is one of the most commonly ordered blood tests in medical practice.
  • Blood makes up approximately 7% to 8% of a person's total body weight.
  • Blood carries oxygen and nutrients to all parts of the body.


Purpose Of CBC Test

The purpose of the CBC (Complete Blood Count) Test is to evaluate the overall health of a patient and to detect the presence of various blood disorders like anemia, infections, inflammation, and cancer to check below purpose such as:-

  • Abnormalities in the blood.
  • Evaluation of overall health.
  • Rule out any disease or disorder.
  • Monitoring the treatment.
  • Diagnosis and treatment of various diseases.


CBC Test Price, Means, Purpose, Normal Range and Results


CBC Test Preparation

Here's the basic CBC Test preparation mentioned below.

Before Test

  • Follow the fasting instructions provided by your doctor.
  • Inform about medications and supplements you're taking.
  • Provide relevant medical history to the healthcare provider.


During Test

  • Cooperate with the healthcare professional conducting the test.
  • Provide a blood sample as requested.
  • Stay calm and relaxed during the procedure.


After Test

  • Resume normal activities.
  • Follow any post-test instructions given by the healthcare provider.
  • Await the test results and discuss them with your doctor.



Overall, preparation for a CBC test is generally minimal. Just be sure to inform your healthcare provider of any medications or supplements you are taking, hydrate well, and wear comfortable clothing that allows easy access to your arm for the blood draw.


Why is a CBC blood test done?

A CBC test means a test that is done to check a variety of reasons, including

  • CBC test Review overall health and screen for disorders.
  • CBC tests Diagnose conditions like anemia or leukemia.
  • It can determine the cause of weakness, fatigue, or fever.
  • Confirm or rule out an infection.
  • CBC test monitor blood disorders and cell counts.
  • Track the progress of medical treatment.
  • Assess the effects of medications on blood cells.

Who Performs a CBC Test?

A CBC (Complete Blood Count) Test is performed by a Pathologist or Lab Technician or healthcare provider, a person who is called a phlebotomist, and usually blood draws, including those for tests like random blood sugar tests, but any healthcare provider trained in drawing blood can perform this task. 


What does a CBC test measure?

  • A complete blood count (CBC) involves multiple measurements that include the Hematocrit, hemoglobin, mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH), mean corpuscular hemoglobin concentration (MCHC), red cell distribution width (RDW), percentage and absolute differential counts, platelet count, red cell count (RBC) & white blood cell count (WBC).
  • A hematocrit means that measures the percentage of red blood cells in your blood. Red blood cells are important because they carry oxygen throughout your body.
  • A standard CBC includes many elements related to the red blood cells, white blood cells, and platelets that have been described in the following sections. 


CBC Test Results

CBC Test results are given in numbers, and often it depends on certain factors, including sex, age, and medical history. 

  • It should be compared to a normal reference range or to previous results to have meaning. Normal ranges for CBCs might vary slightly from the lab.
  • A Complete Blood Count (CBC) usually provides a piece of general information that can give doctors clues about possible health problems. 
  • This information from a CBC helps the doctor decide whether other tests or procedures are needed to make a diagnosis. 
  • The information might also help the doctor to develop or revise treatment plans.
  • A doctor who is familiar with your medical history and overall health is the best person to explain your CBC results and what they mean for you.

The common terms used to describe CBC test results are:

  • Anaemia - Not enough healthy RBCs or hemoglobin.
  • Leukopenia - A low number of WBCs.
  • Neutropenia - A low number of neutrophils.
  • Leukocytosis - An increased number of WBCs.
  • Thrombocytopenia - A low number of platelets.
  • Thrombocytosis - An increased number of platelets.


CBC Test Report

CBC Test Report

CBC Test Report PDF


CBC Test Normal Report

Normal CBC test report format example sample template - Drlogy lab Report

CBC Test Normal Result Report

Normal CBC Test Report


CBC Test Abnormal Report

Abnormal CBC test report format example sample template - Drlogy lab Report

CBC Test Abnormal Result Report

Abnormal CBC Test Report


CBC Test Normal Range

Here are the normal ranges for a Complete Blood Count (CBC) test:

Component Male Female
White Blood Cells 4,500 to 11,000 cells/mcL 4,500 to 11,000 cells/mcL
Red Blood Cells 4.5 to 5.6 million cells/mcL 3.8 to 5.2 million cells/mcL

13.5 to 17.5 g/dL

12.0 to 15.5 g/dL


38.8% to 50%

36% to 48%

Platelets 135,000 to 450,000/mcL 135,000 to 317,000/mcL

Note: "mcL" stands for microliter, which is a measure of volume in the metric system.

It's important to note that the normal ranges for CBC test results can vary depending on factors such as age, sex, and health status. Your healthcare provider can interpret your CBC test results and explain what they mean for your specific situation.


CBC Test Interpretation

Here's an example of a CBC Test interpretation.

CBC Component High Value Interpretation Low Value Interpretation
WBC Infection, inflammation Bone marrow suppression
RBC Polycythemia Anemia
Hemoglobin Polycythemia Anemia
Hematocrit Polycythemia Anemia
Platelets Thrombocytosis Thrombocytopenia


CBC Test High Levels

Here are the potential causes of CBC Test High Levels.

Component High Value Cause
White Blood Cells Infection or inflammatory conditions.
Red Blood Cells Dehydration or chronic lung diseases.
Hemoglobin Polycythemia or lung diseases.
Hematocrit Dehydration or lung diseases.
Platelets Infection or bone marrow disorders.


CBC Test Low Levels

Here are the potential causes of CBC Test Low Levels.

Component Low Value Cause
White Blood Cells Bone marrow failure or immune disorders.
Red Blood Cells Anemia or bleeding disorders.
Hemoglobin Iron deficiency or blood loss.
Hematocrit Anemia or fluid overload.
Platelets Bone marrow disorders or medication side effects.


High levels of CBC components indicate possible infections, inflammation, or blood disorders, while low levels can suggest anemia, nutritional deficiencies, or bone marrow problems.


Abnormal RBC counts

A low RBC count may be due to the following:

  • Anaemia is due to prolonged bleeding or blood loss (hemorrhage), a diet lacking iron or certain vitamins, certain types of chemotherapy, blood disorders, or chronic disease.
  • Hodgkin's lymphoma and other lymphomas.
  • The cancers of the blood, such as leukemia and multiple myeloma.
  • Some myeloproliferative disorders.


A high RBC count may be due to the following:

  • Severe dehydration, such as from severe diarrhea.
  • Kidney tumors.
  • Lung diseases.
  • Polycythemia vera (a myeloproliferative disorder).


Abnormal WBC counts

A Low WBC count may be due to the following:

  • Viral infection.
  • A severe bacterial infection.
  • Suppression of bone marrow is caused by treatments like chemotherapy or radiation therapy.
  • Bone marrow diseases, such as leukemia or myelodysplastic syndrome (MDS).
  • Anaemia.


A High WBC count may be due to the following:

  • Infection.
  • Leukaemia.
  • Some myeloproliferative disorders.
  • Some types of cancer, such as bronchogenic carcinoma.
  • Certain drugs, such as colony-stimulating factors.
  • Stress, allergies, or tissue injury.


Abnormal Platelet Counts

A Low Platelet Count may be due to the following:

  • Some of the cancer types, such as leukemia or lymphoma.
  • Autoimmune diseases.
  • Bacterial infection.
  • Viral infection.
  • Chemotherapy, or radiation therapy.
  • Having many blood transfusions.


A High Platelet Count may be due to the following:

  • prolonged bleeding or blood loss (hemorrhage).
  • Anaemia from low iron levels.
  • Infection (inflammation).
  • Surgical removal of the spleen (splenectomy).
  • Polycythemia vera.
  • Some types of leukemia.


Specimen Requirements For CBC Test

Here are the specimen requirements for the CBC (Complete Blood Count) Test.

Specimen Whole blood
Volume Fill tube to capacity
Container Lavender-top (EDTA) tube
Collection Invert the tube 8 to 10 times immediately after the tube is filled at the time of collection.
Storage Maintain specimen at room temperature.

Sample Stability



Room temperature

1 day


3 days



Freeze/thaw cycles


Causes for Rejection


Hemolysis, clotted specimen, specimen drawn in any anticoagulant other than EDTA, specimen diluted or contaminated, tube not filled with minimum volume & improper labeling.


CBC Test is Safe?

CBC (Complete Blood Count) Test is safe and widely used in clinical practice.

  • It typically involves a routine blood draw, which carries minimal risks.
  • Potential complications, such as bruising or infection, are rare but possible.


When Do You Get CBC Test Results?

CBC Test results are usually available within 1-2 hours to a full day.

  • The exact timeframe may vary depending on the laboratory and healthcare provider.


CBC Test Limitation

Here are some possible limitations of the CBC (Complete Blood Count) Test.

  • Limited in providing specific disease diagnosis.
  • Can be influenced by other factors like medications.
  • May not detect certain rare or early-stage conditions.


CBC Test Risk Factors

Here is the potential risk factor of the CBC (Complete Blood Count) Test.

  • None significant for routine CBC test.
  • Certain medications may affect CBC test results.
  • Invasive procedures may cause temporary CBC changes.


Doctor Recommendations After CBC Test Result

Here are Doctor's recommendations or consult a specialist after the CBC Test.

CBC Test Results Doctor to Visit Reason
High Hematologist Possible infection or blood disorder
Normal General Physician No significant abnormalities
Low Hematologist Possible anemia or nutritional deficiency


CBC Test Price

Here are the estimated CBC Test Price in India with top different cities:

City Price Range (INR)*
Mumbai 150 - 450
New Delhi 200 - 450
Bangalore 200 - 400
Hyderabad 200 - 450
Kolkata 200 - 450
Pune 150 - 400
Lucknow 150 - 400
Noida 200 - 400
Surat 150 - 400
Gurugram 200 - 400
Patna 150 - 400
Chennai 150 - 450
Jaipur 150 - 400
Ahmedabad 150 - 450

*Prices are approximate and vary depending on a specific laboratory or healthcare facility.



Overall, the CBC Test is a routine blood test that can reveal important information about a person's health status and is useful in diagnosing a range of medical conditions. We would recommend visiting the Drlogy Test for detailed information about all medical tests for patients, doctors, scholers and medical students.



  • Complete blood count CBC Test - Wikipedia [1].
  • Unreliable Automated Complete Blood Count Results: Causes, Recognition, and Resolution - NIH [2].


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What diseases can a CBC detect?

A complete blood count (CBC) is a blood test that provides information about various components of the blood, including red blood cells, white blood cells, and platelets.

  • CBC can help detect a wide range of diseases and conditions, including anemia, infections, leukemia, and other blood disorders.
  • Abnormal CBC results may also indicate underlying health problems such as liver or kidney disease, inflammatory disorders, and autoimmune diseases.
  • Changes in CBC parameters over time can help monitor disease progression and the effectiveness of treatment.
  • CBC is a useful screening tool that can help identify potential health issues, but it is not a definitive diagnostic test.

What is CBC normal range?

Here is normal range of CBC Test.

CBC Component Normal Range
Hemoglobin Male: 13.5-17.5 g/dL; Female: 12.0-15.5 g/dL
Hematocrit Male: 38.8%-50.0%; Female: 34.9%-44.5%
White blood cells 4.5-11.0 × 10^3/μL
Platelets 150-450 × 10^3/μL

Is CBC blood test good?

CBC is a widely used blood test that provides valuable information about a person's health status.

  • CBC is a relatively simple and inexpensive test that can be performed quickly in a laboratory or medical office.
  • CBC can help detect a wide range of health problems, including anemia, infections, and blood disorders.
  • CBC is also useful for monitoring the effects of certain medications and for assessing overall health status.
  • While CBC is a valuable screening tool, it is not a definitive diagnostic test, and additional tests may be required to confirm or rule out a specific condition.








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