HbA1c Blood Test London
HbA1c Blood Test at 117a Harley Street, London, from £71.25, with results in 1 working day. HbA1c reflects average blood glucose over roughly the previous two to three months and is used in diagnosis and monitoring of type 2 diabetes. Laboratory testing starts from £71.25.
Est. 1984
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HbA1c reflects average blood glucose over roughly the previous two to three months and is used in diagnosis and monitoring of type 2 diabetes.
Or call 0207 499 1991.
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What does an HbA1c test show?
HbA1c measures glycated haemoglobin, reflecting average blood glucose over about two to three months. In the UK, results are normally reported in mmol/mol. It is used to diagnose and monitor type 2 diabetes, with clinical interpretation where results may be unreliable.
It does not show day-to-day glucose swings. Fasting glucose or continuous monitoring may be relevant for other questions.
HbA1c (GHB)
HbA1c
GHB · £71.25
Analytes: Glycated haemoglobin (HbA1c)
Turnaround: Usually 1 working day
Have a doctor review your HbA1c result
HbA1c reflects your average blood sugar over about three months. A private GP explains which range your result falls in, whether it needs repeating to confirm, and what to do next.
If you already have diabetes, the doctor can review your result against your target and your treatment.
- •Book a GP consultation first if you have symptoms such as thirst, passing urine often or unexplained weight loss
- •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, family history and any previous sugar results, and agree whether other tests should be taken with it.
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 HbA1c blood test at Blood London.
Diabetes screening, monitoring and metabolic risk
A fasting insulin resistance test is a separate booking if insulin resistance is the specific question.
- •Type 2 diabetes or prediabetes screening
- •Monitoring known diabetes
- •Metabolic-risk assessment
- •Symptoms or family history requiring blood-glucose assessment
Conditions that can affect HbA1c
No fasting is required. Mention known anaemia, recent blood loss, pregnancy or haemoglobin conditions that can affect interpretation.
Sampling on Harley Street usually takes 10 to 15 minutes, and the report is usually ready within 1 working day.
Mention known anaemia, recent blood loss, pregnancy or haemoglobin conditions when you book, because they can affect interpretation. Haemoglobin variants are inherited differences in haemoglobin structure that can make HbA1c less reliable in some people.
How HbA1c is used in diagnosis and monitoring
- •HbA1c does not show short-term glucose swings.
- •Anaemia, recent blood loss, pregnancy and some haemoglobin variants can make HbA1c less reliable.
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.
Urgent care is the safer first step when there is confusion, persistent vomiting, or another symptom of a diabetic emergency.
Source: NHS type 2 diabetes diagnosis.
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Sources & References
- HbA1c is used to diagnose and monitor type 2 diabetes, with clinical interpretation where results may be unreliable. - NHS type 2 diabetes diagnosis[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
Do I need to fast?
Fasting is not required. Mention anaemia, pregnancy or haemoglobin conditions when you book.
Can HbA1c diagnose diabetes on its own?
HbA1c can contribute to diagnosis when criteria are met, but results need clinical interpretation and can be unreliable in some conditions. Symptoms or repeat testing are sometimes needed.
Can a doctor go through my result with me?
A private GP consultation is £150, and a follow-up consultation for existing patients is £100. The doctor reviews the result alongside your symptoms and agrees the next step.
