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Choose collection locationHaematology · Individual laboratory test
This is the actual number of basophils in a volume of blood. Basophils are a small group of white cells involved in immune responses.
Clinical authorDr Nirupama SabhapathySpecialist Clinical Pathology
Understanding the test
Also called Basophil White Cells
An absolute basophil count can help clarify an unusual white cell differential or follow a previously raised count. A recent allergic or inflammatory episode may be relevant.
An absolute count helps distinguish a genuine rise in basophils from a change in their percentage.
The trend and accompanying blood counts can guide decisions about further testing.
Before your sample
No fast is required. Tell the clinician about recent allergic reactions, infection and medicines that affect the immune system.
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
Small fluctuations can look large in percentage terms because basophils are normally scarce. The absolute value and the rest of the blood count provide context.
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 Basophil Count in your report. Use the sample type and collection time when comparing it with an earlier report.
Explore Smart Report
Locate the absolute number as well as the percentage on your report, then compare with the other white cell groups.
Patient questions
The percentage depends on the other white cells present. The absolute number helps a clinician see whether basophils themselves have changed.
Automated analysers count basophils less precisely than the commoner white cells, so a borderline or unexpected result is often confirmed on a blood film, where the cells are examined under the microscope. A repeat sample is occasionally requested if the first one has clotted or reached the laboratory late.
An acute allergic reaction or infection can temporarily lower the basophil count. Tell your clinician when your symptoms occurred and which steroid medicines you use. The count alone cannot identify the cause of an allergic reaction.
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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.