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Intel Lab Diagnostics Dubai
Single Biomarker

Complete Blood Count (CBC)

Full Blood Count

The CBC is the most commonly ordered blood test. It measures red blood cells, white blood cells, haemoglobin, haematocrit, and platelets to assess overall health and detect a wide range of conditions.

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

24 Hours

Turnaround

Blood

Sample

About This Test

What the Complete Blood Count (CBC) test tells you

The complete blood count is not a single measurement but a panel that reports on all three cell lines circulating in blood at once. It counts the red cells that carry oxygen and describes their size and uniformity, counts the white cells that defend against infection and breaks them down into their main types, and counts the platelets that begin the clotting process. Haemoglobin and haematocrit are reported alongside the red cell count, together with a set of indices describing how large the average red cell is, how much haemoglobin it contains, and how much variation exists between cells.

What makes the panel useful is the pattern rather than any one component. Small, pale red cells with a raised variation index point in a different direction from large red cells; a raised white cell count made up mostly of neutrophils suggests something different from one dominated by lymphocytes; a low platelet count alongside falling red and white cells raises a different question from a low platelet count on its own. Reading the components together is what turns a list of numbers into a clinical picture, and it is the reason they are ordered as a group rather than piecemeal.

Because it is broad, quick and needs no fasting, the count is the usual first blood test in almost any investigation and the standard way of monitoring treatments that affect the bone marrow. It remains a screening and monitoring test rather than a diagnostic one. It tells your doctor where to look next, and abnormal results generally lead to more specific tests, to examination of a blood film under the microscope, or simply to a repeat once an acute illness has settled.

Sample type
Blood
Turnaround
24 Hours
Fasting
Not required
Best for
All ages
Why Get Tested?

Foundational screening test for general health, pre-operative assessment, infection workup, and monitoring blood-related conditions or treatments.

  • A broad first look

    One sample gives a wide view of red cells, white cells and platelets, which is why it opens most investigations.

  • Investigating anaemia

    Haemoglobin together with the red cell indices begins to separate the main types of anaemia from one another.

  • Assessing infection and immunity

    The white cell breakdown shows how the immune system is currently responding and which cell type is driving it.

  • Monitoring treatment safety

    Medicines that suppress the bone marrow are tracked with repeat counts so that problems are caught early.

When This Test Is Ordered

Reasons your doctor may request the Complete Blood Count (CBC) 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.

  • Tiredness, bruising & bleeding

    • You have fatigue, breathlessness on exertion, pallor or dizziness that needs explaining.
    • You bruise easily, bleed for longer than expected, or have unexplained nosebleeds.

  • Fever & infection

    • A fever or infection is being assessed and your doctor wants to see the white cell pattern.

  • Health checks & pre-treatment baseline

    • You are about to have surgery or start a medicine that can affect the bone marrow.
    • You are having a general health check and want a broad baseline to compare against later.
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 required and you may eat, drink and take your usual medicines.

Being normally hydrated helps, because a dehydrated sample concentrates the blood and can make the red cell measurements look higher than they truly are. Avoid strenuous exercise immediately beforehand, since exertion briefly raises the white cell count.

If the count is being repeated to follow a treatment, try to keep the time of day consistent between visits. Mention any recent infection, transfusion, new medicine, or iron and vitamin supplements, as all of these change how the components are read together.

Reading a High or Low Result

  • What a higher result can point to

    • Infection or inflammation, which typically lifts the white cell count and shifts its breakdown.
    • Dehydration, which concentrates the blood and raises haemoglobin and haematocrit together.
    • Smoking or prolonged life at altitude, both of which drive red cell production upward.
    • Iron deficiency or recovery from bleeding, which commonly pushes the platelet count up as a reaction.
    • Bone marrow disorders in which one or more cell lines are produced in excess.

  • What a lower result can point to

    • Iron, vitamin B12 or folate deficiency, which lowers haemoglobin and alters red cell size.
    • Blood loss, whether obvious or slow and hidden within the gut.
    • Chemotherapy, radiotherapy or other medicines that suppress the bone marrow.
    • Chronic kidney disease or long-standing inflammation, which blunt red cell production.
    • Autoimmune destruction of red cells, white cells or platelets.
    • An enlarged spleen, which holds cells out of the circulation.

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

  • The panel shows that something is abnormal but rarely why, so unexpected results usually lead to further and more specific testing.
  • Values shift with hydration, recent exercise, acute stress and time of day, so small deviations are often simply repeated.
  • A clotted or underfilled sample can falsely lower the platelet count and distort other parameters.
  • Automated analysers flag unusual cells but do not identify them; a blood film examined under the microscope is needed for that.

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
  • 1The CBC is a panel reporting on red cells, white cells and platelets together from one sample.
  • 2The pattern across the components carries far more meaning than any single number within it.
  • 3Red cell size and variability indices help point toward the likely type of anaemia.
  • 4It is a screening and monitoring test that guides the next step rather than making a diagnosis.
  • 5No fasting is required, which makes it easy to repeat and to follow as a trend.
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Frequently Asked Questions

Everything you need to know about the Complete Blood Count (CBC) test. Can't find what you're looking for?

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The three cell lines are produced by the same bone marrow and are affected by many of the same conditions. Reporting them together lets your doctor see whether a problem is confined to one line or affects all of them, which points to very different causes.