Complete Blood Count

Also known as: CBC, Hemogram, Full Blood Count

Blood Tests Blood
Patient Friendly Summary

Think of the CBC as a headcount of your blood. It tells the doctor whether you have enough oxygen-carrying cells, infection-fighting cells, and clotting cells. One value outside the range is common and often not serious.

What this test means

The CBC measures the three main blood cell families: red cells (carry oxygen), white cells (fight infection), and platelets (help clotting). It is the most commonly ordered blood test.

Why it is done

It is done for fevers, weakness, infections, bleeding problems, routine health checks, and to monitor many treatments.

Understanding your value

If your value is high

High counts can be seen in infections (white cells), dehydration (red cells), or inflammation (platelets), among other causes.

If your value is low

Low counts may suggest anemia (red cells), reduced immunity or viral infections (white cells), or dengue and other conditions (platelets).

About the normal range

Each lab prints its own reference range next to your value. Ranges differ by age, sex, and lab method, so compare your value only with the range on your report.

When to consult a doctor

Share the report with your doctor if any value is flagged high or low, or if you have ongoing fever, unusual tiredness, easy bruising, or bleeding.

Frequently Asked Questions

It is done for fevers, weakness, infections, bleeding problems, routine health checks, and to monitor many treatments. Your doctor will decide if this test is right for your situation.

High counts can be seen in infections (white cells), dehydration (red cells), or inflammation (platelets), among other causes. This needs clinical correlation — always discuss your report with your doctor.

Low counts may suggest anemia (red cells), reduced immunity or viral infections (white cells), or dengue and other conditions (platelets). This needs clinical correlation — always discuss your report with your doctor.

A single value rarely tells the whole story. Results need to be read together with your symptoms, history, and other tests. Please consult your doctor for a proper interpretation.

Quick Facts

  • TestComplete Blood Count
  • Short formsCBC, Hemogram, Full Blood Count
  • Sample typeBlood
  • CategoryBlood Tests

Related Terms

Anemia Infection Normal Range High Low

Specialists

General Medicine Pediatrics

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Counts the small cells that help your blood clot.

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ESR

A general marker that rises when there is inflammation in the body.

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Disclaimer: This information is for patient education only and does not replace medical advice, diagnosis, or treatment. Always consult a qualified doctor.