Full Blood Count (FBC) – What It Reveals About Your Health
By Tharb Faisl
What Is a Full Blood Count (FBC)? A Full Blood Count (FBC) is one of the most commonly requested blood tests in private healthcare. It offers a detailed snapshot of your blood health — looking at red and white blood cells, haemoglobin, and platelets.
It’s often the first test run when investigating tiredness, infections, inflammation, or general health status.
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What Does an FBC Measure?
| Component | What It Tells Us |
| Red Blood Cells (RBC) | Carry oxygen around the body. Low levels can suggest anaemia. |
| Haemoglobin (Hb) | The oxygen-carrying protein in RBCs. Low Hb = fatigue, shortness of breath. |
| White Blood Cells (WBC) | Defence against infection. High or low levels may signal infection, inflammation, or immune issues. |
| Platelets | Help with blood clotting. Abnormal counts may increase bleeding or clotting risk. |
| Haematocrit (Hct) | Proportion of blood made up by RBCs. Helps diagnose anaemia or dehydration. |
| MCV, MCH, MCHC | Indicate the size and colour of RBCs — crucial for diagnosing types of anaemia. |
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What Symptoms Warrant an FBC Test?
You should consider a Full Blood Count if you experience:
- Constant tiredness or low energy
- Frequent infections or slow healing
- Pale skin, dizziness, or shortness of breath
- Easy bruising or excessive bleeding
- Low immunity or recent illness
- Unexplained inflammation or joint pain
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At Marylebone Diagnostic Centre – FBC Included In:
Marylebone Health Screening Profile (£229)
Well Woman Profile (£199)
Tired All The Time Blood Test
Can be ordered standalone with rapid results
You can book easily at our Central London clinic — just a few minutes from Baker Street, Harley Street, Euston, and Kings Cross.
Book online at marylebonediagnosticcentre.com
Book Your Full Blood Count Test in London Today!
Patient Story
“I’d been exhausted for months. My GP kept saying it was stress. I got an FBC at Marylebone, and it showed iron-deficiency anaemia. I started treatment and honestly felt better within weeks.”
— Joanna, 32, Kings Cross
FAQs – Full Blood Count
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Don’t Ignore the Basics – Book Your FBC Today
A Full Blood Count is one of the fastest, cheapest, and most effective ways to uncover underlying health problems before they escalate.
Professional lab
Friendly team
Clear explanations
Trusted across Central London
Read More:
➤ NHS – Full Blood Count (FBC)
➤ Mayo Clinic – Complete Blood Count (CBC)
➤ British Heart Foundation – Fatigue and Iron Deficiency
