HAEMATOLOGY

Complete Blood Count

Also known as CBC

A CBC counts the main cell types in blood. It is one of the most commonly ordered tests and is used both in routine checks and when someone is unwell.

Sample: Blood
Fasting: Not required
Report: To be confirmed
Home collection: Available

What this test measures

Measures red cells, white cells, haemoglobin and platelets.

Red cell

Haemoglobin
RBC count
Haematocrit (PCV)

Red cell indices

MCV
MCH
MCHC
RDW

White cell

Total leucocyte count

Differential

Neutrophils
Lymphocytes
Monocytes
Eosinophils
Basophils

Platelets

Platelet count
MPV

Who is usually advised this test

People whose doctor has advised this test as part of an assessment
People following up on an earlier result
People including this test in a preventive health check

Why doctors use it

Doctors use this test alongside symptoms, history and other findings. A single result is not read on its own.

Before your test

01No special preparation unless your doctor advises otherwise.

Sample collection experience

A trained professional cleans the site, draws the sample into a labelled tube, and the sample is barcoded before transport to the laboratory.

Understanding your report

Your report lists each parameter with its measured value, unit and reference range. Reference ranges vary by age, sex, method and laboratory, so compare values only against the range printed on your own report. A value outside the range is a prompt for a conversation with your doctor, not a diagnosis on its own.

Read report guides

Questions about this test

Information on this site is educational. It does not replace a consultation, diagnosis or treatment plan from a qualified clinician. Test selection should be based on a doctor's advice or an appropriate clinical assessment.