GYNAECOLOGY & DIAGNOSTICS
Ziwig Endotest®: a non-invasive saliva test for endometriosis
When symptoms persist and answers are not clear, Ziwig Endotest® may support the diagnosis of endometriosis as part of a specialist-led assessment.
£999.00
Complete Endotest® Pathway
Includes: specialist consultation with Mr Alexander Taylor, the Ziwig Endotest® saliva kit and laboratory analysis, consultant interpretation of the result and advice on next steps.

A CLEARER ROUTE FORWARD
Endometriosis can be difficult to identify
Symptoms may overlap with other conditions, and previous tests do not always give a clear answer. Where endometriosis remains suspected after a specialist assessment and any relevant imaging, Ziwig Endotest® can provide additional information to guide the next step in your care.
What is Ziwig Endotest®?
A laboratory saliva test that looks at microRNA markers associated with endometriosis. It is considered alongside your symptoms, examination and any relevant imaging or investigations.
Watch Mr Alexander Taylor explain Ziwig Endotest®
Some people prefer to hear the information directly from their consultant. In this short video, Mr Taylor will explain who the test may be suitable for, how the saliva sample is collected and what happens next.
Mr Alexander Taylor MBBS MD FRCOG PGCMED
Consultant Gynaecologist with specialist expertise in minimally invasive gynaecological surgery.
DESIGNED AROUND YOU
A straightforward, non-invasive process
01
Saliva sample
There is no surgical procedure or blood sample required for the test itself.
02
Specialist review
Your consultant considers the result in the context of your individual symptom history.
03
Clear next steps
We explain what the findings may mean and discuss the most appropriate plan for you.
SPECIALIST ASSESSMENT
Could Ziwig Endotest® be right for you?
A consultation may be helpful if you are living with symptoms suggestive of endometriosis. The test is intended for suitable women aged 18 to 43; Mr Alexander Taylor will confirm whether it is appropriate for you.

SYMPTOMS WORTH DISCUSSING
When it may be helpful to talk to us
Persistent or recurrent pelvic pain
Severe period pain affecting day-to-day life
Deep pain during or after sex
Cyclical pain when passing urine or opening your bowel
Unexplained difficulty conceiving
YOUR PATHWAY AT CLARENDON HEALTH
Clear guidance at every stage
Consultation
Mr Alexander Taylor reviews your symptoms, medical history, examination findings and any previous tests.
Saliva sample
If the test is suitable, we arrange the kit and explain the collection process.
Results and next steps
Your result is interpreted in context and you receive clear advice about the next stage of care.
Important: Ziwig Endotest® is one part of a wider diagnostic pathway. It does not replace a full clinical assessment, ultrasound, MRI or other investigations when these are clinically needed.
YOUR QUESTIONS ANSWERED
Frequently asked questions
Does the test diagnose endometriosis on its own?
No. The test result is considered alongside your symptoms, clinical assessment and any relevant scans or investigations. Your consultant will explain how it fits into your individual care.
Is the Endotest suitable for me?
Suitability is determined by a clinician. The test is intended for female patients aged 18 to 43 with symptoms suggestive of endometriosis, subject to a full discussion of your circumstances and the laboratory’s eligibility criteria.
When will I receive my result?
TDL lists a laboratory turnaround time of 25 days from receipt of the saliva sample. Your result will then be reviewed in the context of your consultation and any other relevant investigations.
Do I need to stop hormonal treatment before testing?
The manufacturer states that the test can be performed while taking hormonal treatment. Your consultant will confirm the most appropriate arrangements for you.
How much does it cost?
The Ziwig Endotest® package costs £999.00 and includes a consultation with Mr Alexander Taylor, Consultant Obstetrician & Gynaecologist.
What happens if my Endotest result is positive?
A positive Endotest result supports a diagnosis of endometriosis. Mr Taylor will review your result alongside your symptoms, medical history and any previous investigations. He will then discuss the most appropriate next steps with you, which may include further imaging to assess the location and extent of any endometriosis and a discussion about suitable treatment options. A positive result does not automatically mean that surgery will be required
What happens if my Endotest result is negative?
A negative Endotest result makes endometriosis less likely, but your result will not be considered in isolation. Mr Taylor will review it alongside your symptoms, medical history and any previous investigations. If your symptoms continue, he can advise whether any further assessment or investigation is appropriate and consider other possible causes for your symptoms.
Will I still need an ultrasound, MRI or laparoscopy?
Possibly. Endotest provides diagnostic information but does not show where endometriosis is located or how extensive it may be. Depending on your symptoms, medical history and Endotest result, Mr Taylor may recommend further imaging such as an ultrasound or MRI to help identify and map any areas of endometriosis and plan treatment. Laparoscopy is not automatically required following an Endotest result and would only be considered where clinically appropriate.
Is the Endotest suitable for me?
Endotest is intended for women aged 18–43 who have symptoms suggestive of endometriosis. It is not currently validated for use during pregnancy or in patients with a history of cancer or HIV, and the saliva sample should not be collected if you have an infection at the time. Mr Taylor will assess your symptoms and medical history and confirm whether the test is appropriate for you before proceeding.
Looking for answers about possible endometriosis?
Arrange a consultation and we will help you understand the most appropriate next step.






