Sesame Components Blood Test Marylebone
From 1 October 2026 — until then book at South Kensington or St Paul's. South Kensington · St Paul's
£46
+ £50 phlebotomy fee (per visit)
+ £50 phlebotomy (per visit)
Confidential Results
Secure online portal
Fast Results
2 days"
Professional Service
Experienced phlebotomists
Wimpole Street, Marylebone (opening 1 October 2026)
Opening hours from 1 October 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
From 1 October 2026 the Sesame Components can be arranged at Wimpole Street Medical & Dental for £46. A venous blood sample (serum) is taken by a nurse or phlebotomist and sent to a UKAS-accredited partner laboratory, which quotes 2 days for this allergy — specific IgE test. The laboratory report shows each value for allergy testing and food sensitivity against its reference range and is released to your portal; we do not interpret results, so take it to your GP or a clinician.
Sesame Components’ place in allergy — specific IgE testing
- Sample
- venous blood sample (serum)
- Laboratory turnaround
- 2 days
- Appointment
- 20 minutes
- Standard price
- £46 + £50 phlebotomy per visit
What Sesame Components measures
Laboratories file the Sesame Components under allergy testing, food sensitivity and immunoglobulin E. The following sections set out how an allergy — specific IgE test of this kind is measured and read.
Specific IgE tests measure the antibody your immune system has made against a particular allergen — a single food, pollen, animal, mould, insect venom, latex or drug. Component-resolved tests go a step further and measure IgE to individual proteins within an allergen source, which helps to separate a risk of severe reaction from cross-reactive sensitisation that causes only mild symptoms. Total IgE gives a general indication of allergic tendency but does not identify a trigger.
Preparing for your Sesame Components
- 1Antihistamines do not affect blood IgE results, so you can keep taking them.
- 2No fasting or special timing is needed.
- 3Bring a note of what you reacted to, how soon after exposure and what happened — it shapes which allergens are worth testing.
Sample for this test: venous blood sample (serum).
Who considers Sesame Components
- People often consider specific IgE testing if they have had hives, lip swelling or wheeze soon after eating a particular food.
- Sneezing, itchy eyes and congestion in a predictable season or around a pet are common prompts for inhalant testing.
- Those who have reacted to a wasp or bee sting with more than local swelling may test venom IgE before considering immunotherapy.
- Component tests are often chosen by people with a peanut, tree nut or milk allergy who want a finer picture of risk.
- Anyone who cannot have skin-prick testing, perhaps because of eczema or antihistamine use, may opt for blood IgE instead.
Understanding your Sesame Components results
A raised specific IgE can indicate sensitisation to that allergen, and higher values are generally associated with a greater chance of clinical reaction, but sensitisation without symptoms is common. Component results can distinguish, for example, IgE to storage proteins in peanut (linked to systemic reactions) from IgE to pollen-related proteins (usually mild oral symptoms). Negative results make IgE-mediated allergy to that trigger less likely but do not address non-IgE or intolerance reactions.
Specific IgE shows sensitisation rather than allergy; a result is interpreted with your reaction history and, where needed, supervised challenge testing.
Related areas of testing at Wimpole Street: allergy panels and profiles, food intolerance and digestive sensitivity, inflammation markers, laboratory tests.
Pricing
Sesame Components
Individual test
Phlebotomy Fee
Blood draw by qualified phlebotomist (per visit)
Total
£96Payment is collected at the clinic. The phlebotomy fee is charged once per visit, regardless of the number of tests booked.
From booking the Sesame Components to reading your result
- 1
Choose your test
Select the Sesame Components and any others you want run from the same visit. Until 1 October 2026 the identical test can be booked at South Kensington or St Paul’s.
- 2
Nurse-led sample
From 1 October 2026 the venous blood sample (serum) 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 2 days 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.
Why test at Wimpole Street
Wimpole Street Medical & Dental opens at 22 Wimpole Street on 1 October 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 October 2026)
- Bond Street — about 6 minutes (Central, Jubilee & Elizabeth lines)
- Oxford Circus — about 7 minutes (Central, Bakerloo & Victoria lines)
- Analysis is carried out by a UKAS-accredited partner laboratory, so methods and reference ranges match those used across the NHS.
- One standard price applies to everyone — there is no members’ tier at Wimpole Street.
- Evening appointments until 8pm on Tuesday and Thursday, and Saturday opening, are planned from day one.
Other tests often considered alongside Sesame Components
- Olive ComponentsWimpole Street, Marylebone · from 1 October 2026
- Peanut ComponentsWimpole Street, Marylebone · from 1 October 2026
- ProfilinsWimpole Street, Marylebone · from 1 October 2026
- Soybean ComponentsWimpole Street, Marylebone · from 1 October 2026
- Total IgEWimpole Street, Marylebone · from 1 October 2026
- Venom ComponentsWimpole Street, Marylebone · from 1 October 2026
Frequently Asked Questions
A venous blood sample (serum). A nurse or phlebotomist collects it at 22 Wimpole Street, Marylebone from 1 October 2026; the appointment allows time for identity checks and any preparation questions. The laboratory quotes 2 days for this test.
Ready to Book Your Test?
Wimpole Street opens 1 October 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 Sesame Components 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 October 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.
