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Intel Lab Diagnostics Dubai
Single Biomarker

Absolute Lymphocyte Count

Lymphocyte White Cells

This test measures the total number of lymphocytes in your blood. Lymphocytes are immune cells critical for fighting infections. Abnormal counts may indicate viral infections, immune deficiencies, or blood disorders.

BLOOD24 HOURSNO FASTING
AEDAED70
  • Free home collection
  • Physician-reviewed report

24 Hours

Turnaround

Blood

Sample

About This Test

What the Absolute Lymphocyte Count test tells you

Lymphocytes are the cells that give the immune system its memory. The population includes T cells, which direct and carry out cell-mediated defence, B cells, which mature into the plasma cells that make antibodies, and natural killer cells, which act early and without prior exposure. The absolute lymphocyte count reports how many of these cells are circulating, as a number rather than as a percentage, and it is normally reported as part of a full blood count differential and read as a pattern with the other cell lines.

The number moves for a wide range of reasons, most of them temporary. Viral infections typically raise it, sometimes markedly and with characteristic changes in the appearance of the cells on a blood film. Adrenaline, strenuous exercise and acute stress can lift it briefly by shifting cells from tissue into the circulation. It falls with corticosteroid treatment, chemotherapy, and during many acute illnesses. A shift in either direction shortly after an infection is extremely common and, on its own, usually means nothing at all, which is why an isolated abnormal count is normally just repeated once things have settled.

What matters is persistence and context. A sustained, unexplained rise in an adult (particularly alongside an enlarged spleen or lymph nodes) is investigated properly, since chronic lymphocytic leukaemia and lymphoma can present that way. A persistently low count raises questions about immune competence and prompts a look for causes ranging from medication to HIV to bone marrow disease. Neither conclusion is drawn from a single result; the count is always interpreted with the rest of the blood count and the clinical picture.

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

Helps assess immune function, investigate recurrent infections, and aid in diagnosing leukaemias, lymphomas, and immune deficiency states.

  • Assessing immune capacity

    The lymphocyte count is a practical first indicator of whether the adaptive immune system has the cells it needs, which matters in recurrent or unusual infections.

  • Characterising an infection

    A lymphocyte-predominant rise points towards a viral process, whereas a neutrophil-predominant rise suggests a bacterial one: a distinction only visible in the full differential.

  • Investigating blood disorders

    A persistent, unexplained lymphocytosis in an adult is one of the standard triggers for haematological assessment.

  • Monitoring treatment effects

    Corticosteroids, chemotherapy and some immune therapies lower lymphocytes, and the count is used to track that effect over time.

When This Test Is Ordered

Reasons your doctor may request the Absolute Lymphocyte 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.

  • Infections & immune symptoms

    • Recurrent, prolonged or unusually severe infections.
    • Investigation of a suspected immune deficiency.

  • Nodes, spleen & abnormal counts

    • An abnormal white cell differential found on a routine full blood count.
    • Enlarged lymph nodes, an enlarged spleen, or unexplained night sweats and weight loss.

  • Treatment & disease follow-up

    • Monitoring during chemotherapy, corticosteroid treatment or immunosuppressive therapy.
    • Follow-up of a known lymphoproliferative disorder.
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.

Strenuous exercise and acute emotional or physical stress temporarily raise the lymphocyte count, so avoid a heavy workout immediately before your appointment and rest for a few minutes before the sample is taken. Corticosteroids lower the count for a period after each dose: do not stop them, but tell the team what you take and when.

Mention any recent or current infection, any vaccination in the preceding weeks, and any chemotherapy or immunosuppressive treatment, since all of these move the count. Blood is collected into an EDTA tube and analysed promptly.

Understanding Your Results

A result in the Low band, reported in cells/µL, most often follows corticosteroid treatment, chemotherapy, a severe acute illness or major surgery; a count that stays low raises questions about immune competence and is looked into. The Normal band is the expected range and needs no action on its own. A result in the High band commonly reflects a viral infection and usually settles by itself, while a sustained, unexplained rise in an adult (particularly with an enlarged spleen or lymph nodes) is assessed further. Shifts in either direction shortly after an illness, strenuous exercise or acute stress are very common and often mean nothing, so an isolated abnormal value is normally repeated once things have settled. The count also says nothing about which lymphocyte subsets are present. Your doctor reads it with the rest of the blood count, your symptoms and your history.

SmartReport
10003000
Healthy zone2000cells/µLNormal
Reference ranges · cells/µL
Low
Low: may relate to infection or immune status.
0–999
Normal
Normal lymphocyte count.
1000–3000
High
Elevated: often with viral infections.
3001–6000

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

    • Viral infections, including glandular fever, cytomegalovirus and viral hepatitis.
    • Whooping cough, which characteristically raises lymphocytes.
    • Chronic lymphocytic leukaemia and other lymphoproliferative disorders.
    • Toxoplasmosis and some other non-viral infections.
    • A transient shift after acute stress, injury or strenuous exercise.
    • The period following removal of the spleen.

  • What a lower result can point to

    • Corticosteroid treatment, which redistributes and depletes circulating lymphocytes.
    • Chemotherapy, radiotherapy and immunosuppressive drugs.
    • HIV infection, and some other viral illnesses during their acute phase.
    • Severe acute illness, sepsis or major surgery.
    • Autoimmune disease, particularly systemic lupus erythematosus.
    • Bone marrow failure, or an inherited immune deficiency.

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

  • Transient rises and falls after a recent illness are very common and usually mean nothing on their own, so an isolated abnormal value is normally repeated once the illness has settled.
  • The count says how many lymphocytes are present but nothing about which subsets they are; specialised testing is needed to separate T, B and natural killer cells.
  • An ordinary total count does not exclude a specific immune deficiency affecting one lymphocyte subset.
  • Recent corticosteroids or an acute illness can lower the count enough to hide an underlying abnormality.

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
  • 1Lymphocytes comprise T cells, B cells and natural killer cells, and drive adaptive immunity.
  • 2The count is part of a full blood count differential and is read alongside the other cell lines.
  • 3A raised count most often reflects a viral infection and settles on its own.
  • 4A sustained, unexplained rise in an adult warrants haematological assessment.
  • 5Low counts are commonly caused by corticosteroids, chemotherapy or acute illness.
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Frequently Asked Questions

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Viruses are handled largely by T cells and by antibody-producing B cells. The body expands these populations to clear the infection, and the expansion shows up as a higher count in the blood.