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Choose collection locationHaematology · Individual laboratory test
Lymphocytes are white cells involved in immune defence. The absolute count helps assess a change seen on a blood differential.
Clinical authorDr Nirupama SabhapathySpecialist Clinical Pathology
Understanding the test
Also called Lymphocyte White Cells
A clinician may review the absolute count after an infection, with treatment that affects immune cells, or when the white cell differential is unusual.
An absolute lymphocyte count shows the actual number of these immune cells in a volume of blood.
Recent illness, medicines and earlier counts help the clinician decide whether to repeat the test.
Before your sample
No fasting is normally needed. Note recent infections, vaccinations and medicines that affect immune cells, and bring earlier counts if available.
The clinician takes blood from a vein into a tube that keeps it from clotting. The collection team sends the labelled specimen to the laboratory.
Smart Report
24 hoursLaboratory turnaround
Age and recent illness affect expected levels. Comparing with an earlier count can clarify whether a change is transient or sustained.
From sample to follow-up

Choose your location, add the test to your care bag and select a time. If you are booking for someone else, assign the test to them in checkout.
Choose collection locationLook for Absolute Lymphocyte Count in your report. Use the sample type and collection time when comparing it with an earlier report.
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Bring earlier blood counts and dates of recent illness so the clinician can distinguish a short-lived change from a longer trend.
Patient questions
No. The total lymphocyte count includes several types of cells. A CD4 measurement looks at a particular subset and answers a more specific question.
An acute illness or corticosteroid treatment can temporarily lower the count. Let your clinician know about recent illness, strenuous exercise and medicines, especially if this result differs from your usual count. A repeat count after recovery can help show whether the change persisted.
Some viral infections increase the number of circulating lymphocytes as the immune system responds. Others, including influenza, can temporarily lower it. The count alone cannot identify the virus.
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Written by Dr Nirupama Sabhapathy, Specialist Clinical Pathology. Medically reviewed by Dr Joyce Jose, Specialist Clinical Pathology, on .
Catalogue information and AED price checked on 2 November 2026. Clinical suitability, preparation, collection arrangements and turnaround are confirmed for your selected test.