Complete Blood Count

Complete Blood Count (CBC) Test in Pune | Pune
A Complete Blood Count (CBC) is one of the most commonly performed blood tests used to assess overall health. It measures different components of the blood, including red blood cells, white blood cells, hemoglobin, hematocrit, and platelets.
A CBC can provide valuable information about conditions such as anemia, infections, inflammation, and certain blood disorders. It is commonly included in routine health checkups and may also be recommended when a person experiences symptoms such as fatigue, weakness, fever, or unusual bleeding.
What is a Complete Blood Count?
A Complete Blood Count is a laboratory blood test that evaluates the number and characteristics of different blood cells.
The test generally provides information about:
- Red Blood Cells (RBC): Carry oxygen throughout the body.
- Hemoglobin (Hb): The protein in red blood cells responsible for carrying oxygen.
- Hematocrit (HCT): Indicates the proportion of blood made up of red blood cells.
- White Blood Cells (WBC): Help the body fight infections and participate in immune responses.
- Platelets: Help blood clot and control bleeding.
Depending on the laboratory, the CBC may also include additional red-cell and white-cell indices.
Why is a CBC Test Done?
A doctor may recommend a CBC for several reasons:
Routine Health Screening
CBC is commonly performed as part of preventive health checkups to assess general health.
Detecting Anemia
Hemoglobin and red blood cell measurements can help identify anemia and provide clues about its severity.
Identifying Infections
Changes in white blood cell counts may provide information that supports the evaluation of infections.
Monitoring Health Conditions
CBC may be used to monitor certain medical conditions or changes in blood cell levels over time.
Evaluating Unexplained Symptoms
The test may be recommended for symptoms such as persistent fatigue, weakness, fever, bruising, or unusual bleeding.

Symptoms That May Lead to a CBC Test
Your healthcare provider may recommend a CBC if you experience:
- Persistent tiredness or weakness
- Pale skin
- Frequent or unexplained fever
- Recurrent infections
- Easy bruising
- Unusual bleeding
- Shortness of breath
- Dizziness or light-headedness
These symptoms can have many different causes, so a CBC result should be interpreted along with other clinical information.
What Does a CBC Test Measure?
| Parameter | What It Indicates |
|---|---|
| Hemoglobin | Oxygen-carrying capacity of blood |
| RBC Count | Number of red blood cells |
| WBC Count | Number of white blood cells |
| Platelet Count | Blood clotting function |
| Hematocrit | Percentage of blood volume made up of RBCs |
| MCV | Average size of red blood cells |
| MCH/MCHC | Hemoglobin characteristics of red blood cells |
The exact parameters included may vary slightly between laboratories.
How is a Complete Blood Count Performed?
Blood Sample Collection
Laboratory Analysis
Report Generation
Medical Interpretation
Does a CBC Require Fasting?
Fasting is generally not required for a CBC test alone. However, if CBC is being performed along with other tests that require fasting, you should follow the preparation instructions provided by your healthcare provider or laboratory.
What Can Abnormal CBC Results Indicate?
Abnormal CBC values can occur for many reasons.
- Low hemoglobin: May be associated with anemia or other conditions.
- High or low WBC count: May occur with infections, inflammation, medications, or other health conditions.
- Low platelet count: May increase the risk of bleeding in some situations.
- High platelet count: Can occur due to several conditions, including inflammation or other disorders.
- Abnormal red blood cell indices: May provide clues about different types of anemia.
An abnormal CBC does not necessarily mean that you have a serious disease. Your doctor may recommend additional tests to determine the underlying cause.
Benefits of Complete Blood Count Testing
- Provides an overview of important blood components
- Useful as part of routine health screening
- Helps evaluate anemia
- Supports the assessment of infections and inflammation
- Helps monitor certain medical conditions
- Requires only a small blood sample
Who Should Consider a CBC Test?
A CBC may be recommended for:
- Individuals undergoing routine health checkups
- People experiencing unexplained fatigue or weakness
- Individuals with recurrent infections or fever
- People with unusual bruising or bleeding
- Patients monitoring certain health conditions
- Individuals whose doctor recommends blood-cell evaluation