Leukocyte formula

What is analysed?

The leukocyte formula, also known as the white blood cell differential count, analyses the proportion of different types of white blood cells present in the blood sample.

How is it used?

The leukocyte formula provides valuable information about the immune system's status and helps diagnose various infections, inflammatory conditions, and haematological disorders.

Why undergo the analysis?

The analysis is conducted to assess the overall health of the immune system, diagnose infections, monitor the response to treatment, and detect any underlying haematological abnormalities.

When to undergo the analysis?

The analysis is typically ordered as part of a routine blood test during annual check-ups, when symptoms suggestive of infection or inflammation are present, or as part of the diagnostic workup for certain medical conditions.

What sample is required?

A blood sample is required to perform the leukocyte formula analysis. This sample is usually obtained through a standard blood draw procedure.

Is any prior preparation necessary?

No specific preparation is required before undergoing the leukocyte formula analysis. Patients should inform their healthcare provider about any medications they are taking, as certain drugs may affect white blood cell counts.

What are the normal values?

The normal values for the leukocyte formula vary depending on the age, sex, and health status of the individual. However, a typical reference range for adults is as follows:

Neutrophils 40% to 60% Lymphocytes 20% to 40% Monocytes 2% to 8% Eosinophils 1% to 4% Basophils 0.5% to 1.0%

What do altered values signify?

Altered values in the leukocyte formula may indicate various medical conditions. For example, an increased neutrophil count may suggest bacterial infections or inflammatory disorders, while an elevated lymphocyte count may indicate viral infections or chronic inflammatory conditions.