About the CBC Test
The Complete Blood Count (CBC) test is a common blood test used to evaluate your overall health and detect a wide range of disorders, including infections, anemia, and leukemia. It measures several components of your blood, including red blood cells, white blood cells, hemoglobin, hematocrit, and platelets.
Parameters Measured
- Red Blood Cell (RBC) Count: Assesses oxygen delivery to tissues.
- White Blood Cell (WBC) Count: Evaluates immune system health.
- Hemoglobin (Hb): Measures oxygen-carrying protein in RBCs.
- Hematocrit (HCT): Percentage of RBCs in blood.
- Platelet Count: Assesses blood clotting ability.
- Mean Corpuscular Volume (MCV): Average size of RBCs.
- Mean Corpuscular Hemoglobin (MCH): Amount of hemoglobin per RBC.
- Mean Corpuscular Hemoglobin Concentration (MCHC): Concentration of hemoglobin in RBCs.
- Red Cell Distribution Width (RDW): Variation in RBC size.
Why is the CBC Test Important?
The CBC test is crucial for identifying potential health issues early. It helps in:
- Diagnosing anemia or other blood disorders.
- Detecting infections and inflammations.
- Monitoring overall health as part of a routine checkup.
- Evaluating response to treatments such as chemotherapy.
Who Should Get This Test?
You may need a CBC test if you:
- Experience symptoms like fatigue, weakness, or bruising.
- Have unexplained fevers or signs of infection.
- Have a medical history of anemia or other blood disorders.
- Are undergoing treatment that affects blood cell counts.
- Are preparing for surgery or routine health screening.
How to Prepare for the CBC Test
Typically, no special preparation is required for a CBC test. However:
- Inform your doctor about any medications or supplements you are taking.
- Avoid heavy meals before the test if advised.
Turnaround Time
The results are usually available within 24 hours.