How much does Fasting Insulin Resistance Index (FIRI) HOMA-IR cost at Wimpole Street?

£98 — the standard price that applies to everyone. There is no discounted members’ tier at Wimpole Street and nothing to join. Where a venous draw is needed, a phlebotomy fee is shown on the page before you book and is charged once per visit however many tests are taken.

Can I book a glucose test for my child?

Medical services at Wimpole Street are for patients aged 16 and over. Symptoms of diabetes in a child — thirst, frequent urination, weight loss — should be assessed by an NHS GP the same day, or via NHS 111.

How long do glucose and HbA1c results take?

Both are typically reported within a day of the sample reaching the laboratory. Insulin, C-peptide and antibody tests may take several days. Results appear in your secure portal as a laboratory report with reference ranges.

Do I need to fast for an HbA1c test?

No. HbA1c reflects an average over months, so what you ate this morning does not affect it. Fasting is only needed if glucose, insulin or HOMA-IR are on the same request.

What HbA1c level counts as pre-diabetes?

In the UK, HbA1c between 42 and 47 mmol/mol is generally regarded as indicating raised risk, and 48 or above on two occasions may support a diagnosis of diabetes. The report shows where your value sits; a sensible next step is something to agree with your GP or a clinician.

Why measure C-peptide as well as insulin?

C-peptide is released in equal amounts to insulin but lasts longer in the blood and is not affected by injected insulin, so it gives a steadier read of how much the pancreas is producing. It can help to distinguish between types of diabetes.

📍 Wimpole StreetOpening 1 Nov

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Individual Test

Fasting Insulin Resistance Index (FIRI) HOMA-IR Blood Test Marylebone

From 1 November 2026 — until then book at South Kensington or St Paul's. South Kensington · St Paul's

This test includes:

Includes:Fasting GlucoseFasting InsulinFasting Insulin Resistance Index (FIRI)

20 min appointment

Results: 1 working day

Venous blood

£98

+ £50 phlebotomy fee (per visit)

Price

£98

+ £50 phlebotomy (per visit)

Confidential Results

Secure online portal

Fast Results

1 working day

Professional Service

Experienced phlebotomists

Wimpole Street, Marylebone (opening 1 November 2026)

22 Wimpole Street, Marylebone, London W1G 8GQ

020 7183 0692

wimpolestreet@md.co.uk

Opens 1 November 2026

Opening hours from 1 November 2026

Monday: 9am – 6pm
Tuesday: 9am – 8pm
Wednesday: 9am – 6pm
Thursday: 9am – 8pm
Friday: 8am – 5pm
Saturday: 10am – 4pm
Sunday: Closed

Bond Street — about 6 minutes (Central, Jubilee & Elizabeth lines)
Oxford Circus — about 7 minutes (Central, Bakerloo & Victoria lines)

Wimpole Street, Marylebone

Fasting Insulin Resistance Index (FIRI) HOMA-IR is a diabetes, glucose and HbA1c test run on a venous blood sample (serum and fluoride oxalate). At Wimpole Street it is priced at £98 for everyone and, from 1 November 2026, a nurse or phlebotomist takes the sample at 22 Wimpole Street, Marylebone. The laboratory quotes 1 working day; the report, with reference ranges, is delivered to your secure portal for you to discuss with your GP or a clinician.

diabetes, glucose and HbA1c · Wimpole Street

Fasting Insulin Resistance Index (FIRI) HOMA-IR’s place in diabetes, glucose and HbA1c testing

Sample: venous blood sample (serum and fluoride oxalate)
Laboratory turnaround: 1 working day
Appointment: 20 minutes
Standard price: £98 + £50 phlebotomy per visit

Who considers Fasting Insulin Resistance Index (FIRI) HOMA-IR

People often consider these tests if they are thirsty, passing urine frequently or losing weight without trying.
A family history of type 2 diabetes, or a previous diagnosis of gestational diabetes, are common reasons for periodic checks.
Those with polycystic ovary syndrome or a waist measurement that has crept up may want to look for insulin resistance.
Anyone already living with diabetes may check HbA1c between routine reviews.
It is included in most cardiovascular and general health screens.

What Fasting Insulin Resistance Index (FIRI) HOMA-IR measures

Glucose measures the sugar in your blood at the moment of sampling, whereas HbA1c reflects the average over roughly the previous two to three months by measuring how much glucose has attached to haemoglobin. Insulin, C-peptide and the HOMA-IR index look at how hard the pancreas is working to keep glucose in range, and fructosamine offers a two-to-three-week average when HbA1c is unreliable. Autoantibodies such as GAD and islet cell antibodies help to distinguish autoimmune from other forms of diabetes.

Preparing for your Fasting Insulin Resistance Index (FIRI) HOMA-IR

1Fasting glucose, insulin and HOMA-IR need at least eight hours with water only beforehand; HbA1c does not require fasting.
2Take usual medicines unless told otherwise, but tell the nurse if you use insulin so the sample can be timed safely.
3Avoid unusually intense exercise or a very high-sugar meal the evening before a glucose test.

Sample for this test: venous blood sample (serum and fluoride oxalate).

Understanding your Fasting Insulin Resistance Index (FIRI) HOMA-IR results

An HbA1c in the intermediate band can indicate a higher risk of developing diabetes, while values at or above the diagnostic threshold are usually confirmed with a second sample before any diagnosis is considered. Fasting glucose is read alongside it, and a raised insulin with normal glucose may suggest insulin resistance that diet and activity can influence. Conditions affecting red cells, such as anaemia or haemoglobin variants, can make HbA1c unreliable, which is where fructosamine helps.

A single glucose or HbA1c value is not a diagnosis of diabetes; interpretation depends on repeat testing, symptoms and your wider history.

Related areas of testing at Wimpole Street: cholesterol and lipids, cardiovascular risk markers, kidney function and electrolytes, wellness and biochemistry profiles.

Pricing

Fasting Insulin Resistance Index (FIRI) HOMA-IR

Individual test

£98

Phlebotomy Fee

Blood draw by qualified phlebotomist (per visit)

£50

Total

£148

Payment is collected at the clinic. The phlebotomy fee is charged once per visit, regardless of the number of tests booked.

How it works at Wimpole Street

From booking the Fasting Insulin Resistance Index (FIRI) HOMA-IR to reading your result

1
Choose your test
Select the Fasting Insulin Resistance Index (FIRI) HOMA-IR and any others you want run from the same visit. Until 1 November 2026 the identical test can be booked at South Kensington or St Paul’s.
2
Nurse-led sample
From 1 November 2026 the venous blood sample (serum and fluoride oxalate) is taken at 22 Wimpole Street, Marylebone by our nursing team, led by Precious Agbonmamwen, Registered Adult Nurse (NMC 20H1641E). Identity is checked and any preparation questions answered first.
3
UKAS-accredited laboratory
The sample travels to a UKAS-accredited partner laboratory, whose methods and reference ranges match those used across the NHS and private sectors.
4
Laboratory report to your secure portal
The laboratory report is released to your secure portal — typically from 24 hours; the laboratory quotes 1 working day for this test. It shows each value against the reference range and flags anything outside it; discuss the report with your GP or a clinician.

Marylebone, W1

Why test at Wimpole Street

Wimpole Street Medical & Dental opens at 22 Wimpole Street on 1 November 2026. Medical services are for patients aged 16 and over; registration with the CQC is in progress ahead of opening.

Wimpole Street, Marylebone (opening 1 November 2026)

22 Wimpole Street, Marylebone, London W1G 8GQ

020 7183 0692

wimpolestreet@md.co.uk

Opens 1 November 2026

Bond Street — about 6 minutes (Central, Jubilee & Elizabeth lines)
Oxford Circus — about 7 minutes (Central, Bakerloo & Victoria lines)

Registration with the CQC is in progress ahead of opening; our South Kensington and St Paul’s clinics are CQC registered.
Samples are taken by a nurse or phlebotomist at 22 Wimpole Street, Marylebone, in a clinic built for medical and dental care.
Self-referral: you choose the test and book directly — no GP referral is needed, and the laboratory report is yours to take to your GP or a clinician.

More diabetes, glucose and HbA1c tests

Other tests often considered alongside Fasting Insulin Resistance Index (FIRI) HOMA-IR

All blood tests at Wimpole Street

Frequently Asked Questions

A venous blood sample (serum and fluoride oxalate). A nurse or phlebotomist collects it at 22 Wimpole Street, Marylebone from 1 November 2026; the appointment allows time for identity checks and any preparation questions. The laboratory quotes 1 working day for this test.

Ready to Book Your Test?

Wimpole Street opens 1 November 2026. Register your interest for the Marylebone diary, or book the same test now at South Kensington or St Paul's.

Important information about the Fasting Insulin Resistance Index (FIRI) HOMA-IR at Wimpole Street

Medical services at Wimpole Street Medical & Dental are for patients aged 16 and over.
This is a self-referral service: you choose the test and book directly — no GP referral is needed.
Nurse-led by Precious Agbonmamwen, Registered Adult Nurse (NMC 20H1641E), who oversees sample-taking standards, infection control and the patient pathway. The nursing team does not interpret results.
A laboratory result is not a diagnosis and this page is not a substitute for medical advice. We do not provide clinical interpretation of results — please discuss your report with your GP or a clinician, particularly if a value is flagged or you have symptoms.
CQC registration for Wimpole Street is in progress ahead of the opening on 1 November 2026; our South Kensington and St Paul’s clinics are CQC registered.
Your results are held on a secure portal and treated as strictly confidential, except where disclosure is required by law.
If you are seriously unwell, call 999. For urgent advice that is not an emergency, call NHS 111.