Complete Blood Count (CBC / Hemogram)
What Is This Test?
The Complete Blood Count (CBC), also known as a Hemogram, is one of the most commonly performed blood tests. It measures the number and characteristics of different blood cells, including red blood cells (RBCs), white blood cells (WBCs), hemoglobin, hematocrit, platelets, and several related parameters.
A CBC provides valuable information about your overall health and helps diagnose a wide range of conditions such as anemia, infections, inflammation, blood disorders, bleeding disorders, immune system disorders, and certain cancers. It is also commonly included in routine health check-ups and pre-operative evaluations.
Why this test is performed?
Doctors may recommend a CBC to:
- Evaluate overall health
- Diagnose anemia
- Detect infections
- Assess inflammation
- Investigate unexplained fever
- Evaluate fatigue or weakness
- Diagnose bleeding or clotting disorders
- Monitor chronic medical conditions
- Monitor chemotherapy or other treatments
- Assess nutritional deficiencies (such as iron, vitamin B12, or folate deficiency)
- Screen during routine health check-ups
Test Preparation
- No special preparation is usually required.
- Fasting is not necessary.
- Drink water normally before the test.
- Inform your healthcare provider about medications such as blood thinners, chemotherapy drugs, steroids, or supplements that may affect blood counts.
- Avoid strenuous exercise immediately before testing if possible.
Medical disclaimer
This article is for general information and education only. It is not medical advice, does not create a doctor–patient relationship, and is not a substitute for consultation with a qualified doctor who has assessed your individual situation. Never delay seeking medical advice because of something you have read here.
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