Melatonin (Serum) Blood Test Marylebone
From 1 October 2026 — until then book at South Kensington or St Paul's. South Kensington · St Paul's
£117
+ £50 phlebotomy fee (per visit)
+ £50 phlebotomy (per visit)
Confidential Results
Secure online portal
Fast Results
5 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
Within the laboratory tests range at Wimpole Street, the Melatonin (Serum) is the test to consider when the question concerns sleep hormone, pineal gland and circadian rhythm. It costs £117, and once the Marylebone clinic opens on 1 October 2026 a nurse or phlebotomist takes the venous blood sample (serum), with the laboratory typically reporting in 5 days , Desc.: Should be sent to lab immidiately in red bag. Medical services are for patients aged 16 and over, self-referral with no GP referral needed, and the laboratory report is delivered to your secure portal.
Melatonin (Serum)’s place in laboratory tests testing
- Sample
- venous blood sample (serum)
- Laboratory turnaround
- 5 days , Desc.: Should be sent to lab immidiately in red bag
- Appointment
- 20 minutes
- Standard price
- £117 + £50 phlebotomy per visit
Who considers Melatonin (Serum)
- People often consider this test if their GP or a specialist has suggested it to clarify a previous finding.
- It may be part of monitoring an existing condition between clinic reviews.
- Some people request it to complete a set of investigations recommended elsewhere.
- Occasionally it is added to a broader profile to answer a specific additional question.
What Melatonin (Serum) measures
Laboratories file the Melatonin (Serum) under sleep hormone, pineal gland and circadian rhythm. The following sections set out how a laboratory tests test of this kind is measured and read.
This test measures a specific substance, enzyme, protein or cellular feature in the sample provided, and is usually requested to answer a particular question raised by symptoms, another result or a specialist’s assessment. Some tests in this group are highly specialised assays run by reference laboratories, others are components more often seen inside a larger profile. The product description above gives the specific parameter, sample type and turnaround.
Preparing for your Melatonin (Serum)
- 1Most tests need no special preparation; where fasting, timing or medication adjustments matter, the product description or the nurse will say so.
- 2Bring a list of your medicines and supplements, since several assays are influenced by them.
- 3If you are unsure whether this is the right test for your question, contact the clinic before booking and the nurse can advise or suggest an alternative.
Sample for this test: venous blood sample (serum).
Understanding your Melatonin (Serum) results
Your result is reported against the laboratory’s reference range for your age and sex, and any value outside that range is flagged on the report. Specialist assays sometimes have narrow clinical uses, so the result is best read in the context of why it was requested. We do not provide clinical interpretation; a result is not a diagnosis, and its meaning depends on your history and symptoms, so discuss it with your GP or a clinician.
Laboratory values are one part of a clinical picture, and any unexpected result should be discussed with the clinician who is looking after the wider question.
Related areas of testing at Wimpole Street: wellness and biochemistry profiles, full blood count, kidney function and electrolytes, liver function.
Pricing
Melatonin (Serum)
Individual test
Phlebotomy Fee
Blood draw by qualified phlebotomist (per visit)
Total
£167Payment is collected at the clinic. The phlebotomy fee is charged once per visit, regardless of the number of tests booked.
From booking the Melatonin (Serum) to reading your result
- 1
Choose your test
Select the Melatonin (Serum) 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 5 days , Desc.: Should be sent to lab immidiately in red bag 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)
- Bond Street is about six minutes on foot and Oxford Circus about seven, so the clinic suits people working across the West End.
- Evening appointments until 8pm on Tuesday and Thursday, and Saturday opening, are planned from day one.
- The same catalogue already runs at South Kensington and St Paul’s, so you can test now and move your records to Marylebone later.
Other tests often considered alongside Melatonin (Serum)
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 5 days , Desc.: Should be sent to lab immidiately in red bag 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 Melatonin (Serum) 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.
