Full Blood Count (FBC) Blood Test London
Full Blood Count (FBC) at 117a Harley Street, London, from £63.75, with results in 1 working day. A Full Blood Count counts and describes the main blood-cell groups (red cells, white cells and platelets) to help investigate concerns such as anaemia, infection, inflammation and unusual bruising. Laboratory testing starts from £63.75.
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A Full Blood Count counts and describes the main blood-cell groups (red cells, white cells and platelets) to help investigate concerns such as anaemia, infection, inflammation and unusual bruising.
Your test option
Select a profile to see every included analyte before you book.
What does a full blood count check?
A Full Blood Count (FBC) is one of the most common blood tests. It measures red blood cells, white blood cells and platelets, together with related indices such as haemoglobin and cell counts.
At Medical Express Clinic the test is £63.75. Sampling on Harley Street usually takes 10 to 15 minutes, and the laboratory report is usually ready within 1 working day.
Full Blood Count (FBC)
Full Blood Count (FBC)
FBC · £63.75
Analytes: Full Blood Count
Turnaround: Usually 1 working day
- •Red blood cells and haemoglobin: how many red cells you have and how much haemoglobin they carry, which helps assess anaemia
- •White blood cells: part of the picture when infection or inflammation is being considered
- •Platelets and related cell indices: platelet count can help investigate unusual bruising or bleeding; an FBC does not assess the clotting system itself
An FBC counts and describes the main blood-cell groups. It does not, by itself, explain why a result is abnormal.
Have a doctor review your full blood count
A full blood count shows that a cell count is out of range. It does not show why. A private GP reads the result alongside your symptoms, medicines and history, and decides whether iron studies, vitamin B12 and folate, an inflammation marker or a repeat count is the right next test.
If the result is normal and you still feel unwell, the doctor can look for other causes.
- •Book a GP consultation first if you are unsure whether a full blood count is the right test
- •The report is usually ready within 1 working day
- •Book a follow-up consultation to go through the result and agree the next step
GP Consultation
£150
Discuss symptoms such as tiredness, breathlessness, repeated infections or easy bruising, and agree which tests to request.
Follow-Up Consultation
£100
For existing patients: go through your result with a doctor and agree the next step.
Only need the laboratory test? Our sister clinic lists the full blood count at Blood London.
Who a full blood count helps
When the question is iron stores rather than cell counts, an iron profile is the more targeted test after clinical discussion.
- •Unexplained tiredness or breathlessness
- •Frequent infections
- •Unusual bruising or bleeding
- •A baseline cell-count check as part of general monitoring
What happens on the day
No routine fasting is required. Arrive well hydrated, and mention relevant medicines or recent illness when you book.
A clinician takes the sample at 117a Harley Street. The appointment usually lasts 10 to 15 minutes, and most people go straight back to normal activity. The report is usually ready within 1 working day and is sent securely.
What an FBC result can tell you
- •A Full Blood Count is non-specific and cannot identify the cause of an abnormal result on its own.
- •Abnormal results may need repeat testing, examination or additional blood tests.
Usually 1 working day. Your laboratory report is supplied securely.
The blood-test price covers the laboratory report, not a consultation. A separate GP consultation is £150 if you want a doctor to interpret the result with your symptoms and history.
A good fit when you want a standard cell-count panel with a published price and a defined turnaround.
A GP consultation first is more useful when symptoms are widespread and there is not yet a clear testing plan, or it is unclear whether an FBC alone will answer the question.
Urgent care is the safer first step when there is severe breathlessness, heavy uncontrolled bleeding, high fever with confusion, or another symptom that needs emergency assessment.
Packaged blood-test profiles are useful when several related tests are booked together after clinical advice.
Source: NHS blood tests.
Related tests and services
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Search over 1,000 markers and panels. Type to filter, or browse by category — same-day appointments on Harley Street.
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Packages & profiles
Commonly requested
- Full Blood Count (FBC)£63.75 · 1 working day
- Liver Function Tests£72.50 · 1 working day
- Thyroid Function TestFrom £100 · 1-2 working days
- Cholesterol & Lipid Profile£72.50 · 1 working day
- Anaemia & Iron Profile£126.25 · 1 working day
- HbA1c (Diabetes Screen)£71.25 · 1 working day
- Female Hormone & MenopauseFrom £147.50 · 1 working day
- Male Hormone & Testosterone£238.75 · 1 working day
- Insulin Resistance£111.88 · fasting required
- INR Testing£39.38 · 1 working day
Specialist & genetic
- Gamma GT£36.25 · 1 working day
- Lupus Anticoagulant£98.75 · Clotting disorder screen · 2 days
- Hughes Syndrome£151.25 · APS markers · Results in 2 days
- Sjögren's SyndromeSpecialist autoimmune panel · Walk-in available
- Stool Parasites (Microscopy + PCR)£159.38 · Combined stool panel · 2-3 days
- Heavy Metal Screen£407.50 · Toxic metals panel · 7-10 days
- EDS Genetic Panel£1,375 · NGS panel · Results in 6 weeks
- SMA Genetic Test£641.25 · Carrier screening · 10 days
Sources & References
- Blood tests can assess blood cells and help investigate a range of health concerns. - NHS blood tests[Link]
Dr Penny Sheehan
Health Screening, Paediatrics and Menopause • GMC 6056535
“Dr Sheehan works in women's health, menopause care and health screening. She has training and experience in weight management, including GLP-1 receptor agonist prescribing, and a special interest in paediatric assessment.”
Service information reviewed 26 August 2026.
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What our patients say
“Quick, painless draw and 4-hour results”
“Had an appointment at 1:30 PM but got there early and the staff were happy to draw my blood earlier since there was availability. Quick and painless process with a professional phlebotomist. The turnaround time stated on the website for the test was 4 hours, and sure enough, I received my results super easy with no issues. Would recommend this service.”
“Heard, understood and reassured”
“The clinic is warm and welcoming. In my experience, every time I was there, I found myself heard and understood. My health issues have been tackled in the best of ways. Miss Arjeta is absolutely a master of blood tests, you will not feel anything. Dr Bakhtiar is knowledgeable and calm, I always feel reassured after speaking to him. I genuinely recommend this clinic.”
“Results faster than expected at a walk-in clinic”
“I recently had a blood test for rabbit allergies at Medical Express Clinic, and I'm extremely pleased with the service. Not only did I receive my results faster than expected, but the receptionist was fabulous, she answered all my questions and accommodated all my requests. It's the only walk-in clinic I found in central London with reasonable prices. Highly recommend this clinic!”
Common questions
What does the Full Blood Count include?
The test covers red blood cells and haemoglobin, white blood cells, and platelets with related cell indices. The exact laboratory scope is shown when you book.
Do I need to fast for a full blood count?
Fasting is not required. Arrive well hydrated, and mention relevant medicines or recent illness when you book.
Can a full blood count detect anaemia?
An FBC includes haemoglobin and red-cell indices, which form part of the assessment when anaemia is suspected. The cause of low haemoglobin usually needs further investigation, such as iron studies or clinical review.
Can a doctor explain my result?
A GP consultation is £150, booked separately from the test, if you want a doctor to go through the result.
