Oestrone
Private Oestrone testing in London for £162.99, measuring one E1 oestrogen marker with results expected in around 5 days.
Turnaround time
5 business days
Biomarkers count
1
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Overview of the Oestrone Test
The Oestrone blood test measures Oestrone, also known as E1, one of the three principal naturally occurring oestrogens in the human body.
The test assesses 1 hormone biomarker: Oestrone.
The three main endogenous oestrogens are Oestrone, Oestradiol and Oestriol.
Oestradiol, or E2, is usually the predominant and most biologically potent oestrogen during the reproductive years.
Oestrone becomes relatively more prominent after menopause.
It is produced through peripheral conversion of androgen precursors, particularly within adipose tissue.
This means body composition can influence Oestrone production.
Oestrone can also be converted to Oestradiol and forms part of the broader network of oestrogen metabolism.
Testing can therefore provide additional information where a more detailed assessment of oestrogen status is required.
It may be considered in postmenopausal hormone assessment, selected HRT monitoring and specialist endocrine investigation.
Oestrone is not usually the first-line test for routine assessment of menstrual-cycle function.
Oestradiol is generally more directly informative during reproductive years.
Similarly, Oestrone alone does not diagnose menopause.
Menstrual history, age, FSH and other hormone findings provide the wider context.
Both women and men produce Oestrone.
In men, much of circulating oestrogen is generated through peripheral aromatisation of androgens.
Oestrone concentrations should therefore be interpreted according to sex, age, menopausal status, body composition and hormone medication.
What Does the Oestrone Test Check?
The test measures Oestrone, or E1, a circulating form of oestrogen. This test measures 1 biomarker.
Oestrone
Measures Oestrone (E1), providing information about peripheral oestrogen production and hormone balance, particularly after menopause and during selected endocrine investigations.
Who May Benefit From the Oestrone Test?
Oestrone testing is most useful when more detailed assessment of oestrogen metabolism is required.
Postmenopausal women requiring detailed oestrogen assessment - Oestrone becomes relatively more prominent after menopause.
Women using selected forms of hormone replacement therapy - Specialist monitoring may occasionally include E1 alongside E2.
Women with unusual or difficult-to-interpret Oestradiol results - Oestrone can provide additional endocrine context.
Women undergoing a broader oestrogen profile - Measuring different oestrogens can show how individual forms contribute to the overall pattern.
Men undergoing specialist oestrogen assessment - Peripheral aromatisation produces Oestrone in men as well as women.
People taking exogenous oestrogen or hormone therapy - Treatment can substantially influence concentrations.
People with a previous unexpected Oestrone result - Repeat measurement can determine whether the pattern persists.
People specifically advised by an endocrinologist or menopause specialist to measure E1 - Specialist interpretation is generally most useful.
How to Prepare
Do not stop prescribed HRT or other hormone treatment solely to obtain a baseline Oestrone result unless the prescribing clinician specifically advises this.
Hormone treatment must be considered during interpretation.
Symptoms and Reasons to Consider the Oestrone Test
Oestrone does not have a unique symptom pattern, and symptoms of altered oestrogen status overlap with many other hormonal conditions.
Menopausal symptoms with a need for more detailed hormone assessment - Oestrone can complement Oestradiol.
Hormonal symptoms during HRT monitoring - Different treatment formulations can produce different oestrogen profiles.
Unexpectedly low or high Oestradiol with persistent symptoms - E1 can provide additional context.
Postmenopausal hormone assessment - Oestrone becomes an important circulating oestrogen after menopause.
Hormonal assessment in men with suspected altered oestrogen metabolism - Aromatisation of androgens contributes to circulating E1.
A previous unexplained Oestrone result - Repeat testing can establish consistency.
Symptoms such as hot flushes, irregular bleeding, breast symptoms or low libido are non-specific.
Oestrone should not be used as a standalone explanation for symptoms without broader clinical and hormonal assessment.
How to Book Your Oestrone Test
The Oestrone test can be booked privately for detailed assessment of E1 and oestrogen metabolism.
Choose the Oestrone
Select the individual Oestrone blood test online.
Select your sample collection option
Choose an in-clinic blood draw or professional home or hotel phlebotomy where suitable.
Attend your appointment
A trained healthcare professional collects the required venous blood sample.
Laboratory analysis
Your serum undergoes specialist measurement of Oestrone.
Receive your results securely
Your authorised result is delivered securely and can be interpreted alongside Oestradiol and other reproductive hormone measurements.
When Will I Receive My Results?
The current London Blood Tests page lists a turnaround of approximately 5 days after laboratory receipt.
The current specialist laboratory analytical listing gives approximately 4 days for Oestrone, which is consistent with the customer-facing 5-day estimate once processing and reporting are included.
Specialist repeat analysis can occasionally extend turnaround.
Understanding Your Results
Oestrone concentration varies according to sex, age, menopausal status and hormone treatment.
A lower result can occur where overall oestrogen production is reduced.
The significance depends on whether somebody is premenopausal, postmenopausal, male or receiving hormone treatment.
A higher result can occur with increased peripheral conversion of androgen precursors, exogenous oestrogen exposure and selected endocrine conditions.
Adipose tissue contributes to peripheral Oestrone production, particularly after menopause.
An Oestrone result should not be interpreted using an Oestradiol reference range because the two hormones are distinct.
Likewise, Oestrone should not be used alone to diagnose an undefined concept such as “oestrogen dominance”.
The laboratory interval, Oestradiol, FSH, medication and clinical context provide more reliable interpretation.
Why Book With London Blood Tests?
London Blood Tests provides private Oestrone testing for detailed oestrogen and endocrine assessment.
Measures Oestrone E1 directly - The test assesses one of the body's three principal naturally occurring oestrogens.
Particularly relevant after menopause - Oestrone becomes relatively more prominent once ovarian Oestradiol production falls.
Can complement Oestradiol - E1 and E2 provide different information about oestrogen metabolism.
Can support selected HRT monitoring - Specialist assessment may consider several oestrogen measurements.
Suitable for women and men where clinically relevant - Peripheral aromatisation contributes to Oestrone production in both sexes.
Specialist laboratory analysis - Samples undergo dedicated Oestrone measurement.
Professional blood collection - Clinic and suitable home or hotel appointments are available.
Clear pricing - The Oestrone test costs £162.99.
Private Oestrone Blood Test in London
London Blood Tests provides private Oestrone testing for people requiring detailed assessment of E1 oestrogen status.
The test costs £162.99 and measures 1 hormone biomarker.
Results are expected approximately 5 days after laboratory receipt.
Oestrone is particularly relevant after menopause and is usually interpreted alongside Oestradiol and the wider hormone profile.