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Intel Lab Diagnostics Dubai
Single Biomarker

Absolute Basophil Count

Basophil White Cells

This test counts the number of basophils in your blood. Basophils are white blood cells involved in allergic reactions and inflammation. Abnormal levels can indicate allergies, infections, or bone marrow disorders.

BLOOD24 HOURSNO FASTING
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  • Free home collection
  • Physician-reviewed report

24 Hours

Turnaround

Blood

Sample

About This Test

What the Absolute Basophil Count test tells you

Basophils are the least numerous of the white blood cells, so scarce that a routine differential may find only a handful of them in a whole sample. They belong to the granulocyte family, and their granules are packed with histamine, heparin and related mediators released during allergic and inflammatory responses. The absolute basophil count expresses their number directly rather than as a percentage of the white cells, which keeps the figure meaningful when the overall white cell count is itself unusual.

In practice this is not a test that stands alone. It is reported as one line of a full blood count differential, and it is read as part of a pattern with the neutrophils, lymphocytes, monocytes, eosinophils, red cells and platelets rather than as an isolated result. Of the four differential white cell counts, the basophil count is frankly the least informative on its own: small movements up and down are common, hard to attribute, and rarely mean anything by themselves.

Where it does earn attention is a rise that persists. Sustained basophilia is uncommon and tends to point somewhere specific: it is a recognised feature of the chronic myeloproliferative disorders, in which the bone marrow overproduces mature blood cells, and it can also accompany an underactive thyroid, chronic allergic or inflammatory conditions, and some infections. A doctor will look at how long the rise has lasted, what the rest of the blood count is doing, and whether a blood film supports any explanation, before deciding whether anything further is warranted. In the other direction there is little to say: basophils are normally present in such small numbers that a low or absent count carries no established meaning.

Sample type
Blood
Measured in
cells/µL
Turnaround
24 Hours
Fasting
Not required
Best for
All ages
Why Get Tested?

This test helps evaluate unexplained allergic reactions, chronic inflammatory conditions, or suspected myeloproliferative neoplasms.

  • Completing the differential

    The basophil count is one line of the full blood count differential, and it is the pattern across all the cell lines together that carries the clinical meaning.

  • Screening for marrow disorders

    A sustained rise in basophils is one of the recognised pointers towards a chronic myeloproliferative disorder and prompts closer haematological assessment.

  • Investigating persistent allergy

    Basophils take part directly in allergic and hypersensitivity reactions, so the count is sometimes looked at when allergic symptoms are unexplained or unusually persistent.

  • An accurate absolute figure

    Reporting basophils as a number rather than a percentage avoids the distortion that occurs when the total white cell count is abnormal.

When This Test Is Ordered

Reasons your doctor may request the Absolute Basophil Count test

Your doctor may order this test for any of the reasons below. Some are routine checks, others follow specific symptoms or an earlier result.

  • Allergic symptoms

    • Allergic symptoms such as urticaria, itching or recurrent swelling with no clear cause.

  • Suspected blood disorders

    • Suspected chronic myeloproliferative disorder, or follow-up of a known one.
    • Unexplained itching, night sweats, or an enlarged spleen.

  • Following up a blood count

    • An unexpected abnormality found on a routine full blood count.
    • Assessment of long-standing inflammatory disease alongside the other blood cell counts.
Preparation
The short version
No prep needed.
  • Blood
  • Free home collection
  • No fasting
  • Results in 24 Hours
  1. 1
    Book any time

    No fasting window: pick any slot that suits you, online or on WhatsApp.

  2. 2
    We come to you

    A DHA-licensed nurse collects your sample at home or in the office: free home collection.

  3. 3
    Results in 24 Hours

    A physician-reviewed, easy-to-read report lands securely by WhatsApp and email.

Prep note
Physician reviewed

No fasting is needed and no special preparation is required, but a few things are worth mentioning to the team.

Corticosteroid tablets, injections or creams reduce the count for a period afterwards, as does a recent acute illness or major physical stress, so say if any of these apply. If you are being tested because of allergic symptoms, note when your last flare-up was, since the result reads differently during and between episodes.

The sample is collected into an EDTA tube and is best analysed promptly; a repeat sample is occasionally requested if the first has clotted or has been delayed.

Understanding Your Results

Most results sit in the Normal band, reported in cells/µL. Basophils are the rarest white cells, so a low or absent count has no established meaning. A result in the High band means more basophils are circulating than expected: chronic allergic conditions, chronic inflammatory disease, an underactive thyroid and some infections are the usual explanations, and a single mildly raised value is often non-specific. A rise that persists carries more weight, since sustained basophilia is one of the recognised pointers to a bone marrow disorder. Corticosteroids and recent acute stress lower the count temporarily and can mask a genuine rise, and analysers measure basophils less precisely than the commoner white cells, so a borderline value is often checked on a blood film. Your doctor reads the count with the rest of the differential, your symptoms and your history.

SmartReport
100
Healthy zone50cells/µLNormal
Reference ranges · cells/µL
Normal
Normal basophil count.
0–100
High
Elevated: may relate to allergy or inflammation.
101–500

Ranges are a guide: your physician interprets your result alongside your symptoms and history.

Reading a High or Low Result

  • What a higher result can point to

    • Chronic myeloproliferative disorders, including chronic myeloid leukaemia and polycythaemia vera.
    • An underactive thyroid gland.
    • Chronic allergic conditions such as long-standing urticaria, allergic rhinitis or drug hypersensitivity.
    • Chronic inflammatory disease, including inflammatory bowel disease.
    • Certain infections, such as chickenpox and some chronic bacterial infections.
    • The period following removal of the spleen.

These are possibilities, not diagnoses. A single value outside the reference range is interpreted alongside your symptoms, history and other tests: your doctor decides what it means for you.

Limitations & Safety

What this test cannot tell you

  • Basophils are so scarce that a low or absent count has no established clinical significance and is not treated as an abnormal finding.
  • This is the least informative of the differential white cell counts in isolation; small changes are common and usually cannot be attributed to anything specific.
  • Automated analysers count basophils less precisely than the commoner white cells, so a borderline result is often confirmed on a blood film.
  • Corticosteroids and recent acute stress lower the count temporarily and can mask a genuine rise.

Risks of the blood draw

  • Mild bruising or brief soreness where the needle went in.
  • Occasional lightheadedness, which settles after a few minutes of rest.
  • Bleeding or infection at the site, which is rare with sterile single-use equipment.
Key Points
  • 1Basophils are the rarest white cells and release histamine and heparin during allergic reactions.
  • 2The count is part of a full blood count differential and is read alongside the other cell lines, not alone.
  • 3The test is used to look for a rise; a low count carries no established meaning.
  • 4A rise that persists is uncommon and is one of the recognised pointers to a bone marrow disorder.
  • 5A single mildly raised value is common and non-specific, so trends matter more than one result.
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Frequently Asked Questions

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They store and release histamine, heparin and related mediators, which widen blood vessels and recruit other immune cells. That makes them active participants in allergic reactions and in some forms of chronic inflammation.