Your thyroid can affect hormones, ovulation and fertility. A TSH blood test is a simple way to check your thyroid function.
At Luna Fertility, we offer private TSH testing in London with consultant-led fertility care. Our team can assess your results alongside your fertility history and help identify whether further testing or support is needed.
Trying to conceive or preparing for IVF or IUI? Book your TSH test at our Harley Street clinic and get clear guidance on your next steps.
A TSH test is a simple blood test that measures thyroid-stimulating hormone and helps assess how well your thyroid is functioning.
TSH helps control the production of thyroid hormones, including T4 and T3, which support metabolism, energy and other important body functions.
Your TSH result may be checked alongside Free T4 and Free T3 and interpreted based on your symptoms, medical history and fertility needs.
A TSH blood test may be useful if you have thyroid concerns or if thyroid function may affect your fertility.
You may benefit from thyroid testing if you:
Possible symptoms include tiredness, weight changes, feeling unusually hot or cold, changes in heart rate, menstrual changes and mood changes.
These symptoms do not always indicate a thyroid problem. A TSH test and medical assessment can help identify the possible cause.
A TSH blood test checks the level of thyroid-stimulating hormone in your bloodstream.
Depending on your clinical needs, your doctor may also recommend other thyroid blood tests. These can include:
Testing several thyroid markers can help provide a clearer picture of thyroid function.
For example, an abnormal TSH result may need to be considered alongside your Free T4 level before your doctor can determine whether further investigation or treatment is appropriate.
At our fertility clinic in London, we aim to make thyroid testing straightforward to understand.
Book an appointment with our fertility and women’s health team in London to discuss your symptoms, medical history, and fertility goals.
Our London clinic is located at 4 Harley Street, London W1G 9PB, making it convenient to access private fertility care in central London.
If appropriate, we will arrange your TSH blood test to check your thyroid function. The test requires a small blood sample.
It is a quick and straightforward procedure, and your doctor will let you know if any preparation is needed beforehand.
Once your blood sample has been analysed, your TSH results will be reviewed by our clinical team.
Depending on your needs, additional thyroid markers such as Free T4 or Free T3 may also be tested to provide a clearer picture of your thyroid function.
Your TSH result is considered alongside your symptoms, medical history and fertility goals rather than on its own.
Our fertility specialists will explain your results and recommend any further testing, monitoring or treatment that may be appropriate for your fertility journey.
TSH results are usually reported in mIU/L, although reference ranges can vary between laboratories and may differ depending on the individual and clinical situation.
The table below provides a general guide rather than a diagnosis:
| TSH Level | Interpretation | Possible Effect |
|---|---|---|
| Low | Below normal range | May indicate an overactive thyroid |
| Normal | Within normal range | Usually shows normal thyroid function |
| High | Above normal range | May indicate an underactive thyroid |
| Persistently Abnormal | Needs medical review | May need further testing or treatment |
There is no single TSH number that is suitable for everyone.
Pregnancy, fertility treatment, thyroid history, medication and other health factors can influence how a result is interpreted.
For this reason, you should not try to diagnose a thyroid condition based on the TSH number alone.
At Luna Fertility, TSH testing may be included in your infertility assessment when clinically appropriate, helping your specialist understand your thyroid health before treatment.
Before IVF (in vitro fertilisation) treatment, your specialist may recommend a TSH test as part of your pre-treatment assessment.
Your result can help identify thyroid concerns that may need further assessment or management before starting your IVF cycle.
IUI (intrauterine insemination) is a fertility treatment that places prepared sperm directly into the uterus around ovulation.
Your fertility specialist may recommend TSH testing when appropriate to assess thyroid function and determine whether any further investigation is needed before or during treatment.
Ovulation induction uses medication to help stimulate or regulate ovulation when it is irregular or does not occur naturally.
A TSH test may be recommended when menstrual irregularities or thyroid concerns are present, helping your specialist assess your hormonal health before treatment.
Choosing the right clinic means getting more than a blood test.
At Luna Fertility, we combine thyroid testing with personalised fertility care to help you understand your results and what they mean for your fertility journey.
You can benefit from:
Whether you are trying to conceive or preparing for fertility treatment.
Our team can help you understand your thyroid health and recommend the right next steps.
The cost of a private TSH test in Harley Street, London can vary depending on whether you need TSH testing alone or additional thyroid and fertility blood tests.
At Luna Fertility, your doctor can recommend the most appropriate tests based on your symptoms, medical history and fertility goals.
For the latest TSH test cost and appointment availability, contact our team and arrange your private consultation at our Harley Street clinic.
Learn more
Looking for a private TSH test in London? Luna Fertility offers consultant-led testing with personalised fertility guidance.
Whether you are trying to conceive or preparing for IVF, IUI or ovulation induction, our specialists can help you understand your thyroid results and next steps.
Book your TSH test at our Harley Street clinic today. Call 020 3137 6093 to arrange your appointment.
