White Blood Cell
Differential Count

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Also known as: Differential leucocyte count; Differential White Cell count; White blood cell morphology; WBC differential; Diff

At a Glance

Why Get Tested?

To diagnose an illness affecting your immune system, such as an infection, inflammatory illness, immune deficiency, or tumour such as leukaemia or lymphoma

When to Get Tested?

As part of a full blood count (FBC), which may be requested for a variety of reasons

Sample Required?

A blood sample taken from a vein in your arm or by a finger-prick (children and adults) or heel-prick (infants)

Test Preparation Needed?