Thyroid Stimulating Hormone (TSH)
The primary marker for assessing thyroid function. Ideal as a first-line check for symptoms such as tiredness, weight changes, or mood shifts. Quick insight into potential thyroid imbalance.
- Description
- Why This Test?
- Associated Conditions
- Uses of This Test
The Thyroid Stimulating Hormone (TSH) blood test measures the level of TSH in your bloodstream. TSH is produced by the pituitary gland and plays a central role in regulating thyroid hormone production, which influences metabolism, energy levels, temperature regulation, and overall wellbeing.
Because thyroid imbalance often develops gradually and symptoms can be vague or non-specific, measuring TSH provides an important first-line assessment of thyroid function. This test helps identify whether the thyroid is underactive or overactive and whether further thyroid testing may be required.
TSH acts as a control signal between the brain and the thyroid gland. When thyroid hormone levels are low, TSH rises to stimulate hormone production. When thyroid hormone levels are high, TSH falls.
Testing TSH is commonly used to:
- Screen for underactive or overactive thyroid function
- Investigate symptoms such as fatigue, weight changes, low mood, anxiety, or temperature sensitivity
- Monitor known thyroid conditions or response to treatment
Thyroid disorders are common and can affect people of all ages. A blood test is the most reliable way to assess thyroid regulation and identify imbalance early.
Hypothyroidism
An underactive thyroid where elevated TSH may indicate reduced thyroid hormone production.
Hyperthyroidism
An overactive thyroid where suppressed TSH may reflect excessive thyroid hormone levels.
Subclinical Thyroid Dysfunction
Mild thyroid imbalance where TSH is abnormal but symptoms may be subtle or absent.
- Screen for thyroid dysfunction
- Investigate fatigue or low energy
- Investigate unexplained weight changes
- Assess mood or anxiety symptoms
- Monitor known thyroid conditions
What We Test
Biomarkers analysed by accredited UK laboratories
Biomarker Tested
Hormones
- Thyroid Stimulating Hormone (TSH)
In-Clinic Blood Testing At Longridge, Preston
If you’d rather leave everything to a qualified professional, our in-clinic blood testing service is the most comfortable and hands-off experience. Once you complete your order, we’ll contact you to arrange a convenient appointment time.
Your sample will be taken by a trained phlebotomist, making the process quick, smooth, and reassuring - especially if you’re nervous around blood or struggle with finger-prick tests.
We send off all samples the same day to the lab to be processed so results can be expected within 72 hours.
Why Use This Service:
Hands-off, professional experience
High-quality samples for complex tests
No risk of “not enough sample”
Support at every step
No posting or packaging required
Convinient appointment times
Taking Charge Of Your Own Health Has Never Been Easier
Worried about your wellbeing?
If you’re experiencing unexplained symptoms such as fatigue, weight loss, or other issues, a comprehensive blood test may be the key to discovering potential underlying health problems.
Need to monitor a health condition?
Blood tests offer essential insights into various aspects of your health, from detecting deficiencies to evaluating immune functions.
Enhancing Performance and Fitness?
Whether you’re training for a sport or keeping track of your fitness progress, a blood test serves as an excellent foundation for your performance improvement journey.
All Our Tests Include:
No GP Referral
Order directly - no waiting for appointments
Fast Results
Detailed analysis within 72 hours
Doctor's Commentary
Expert interpretation of your results included
Secure & Confidential
Discreet service and consultations
Frequently Asked Questions
- Qualified Pharmacists
- Flexible Appointments
- Top Customer Service
How accurate are home finger-prick tests compared to clinic tests?
Our home finger-prick tests use the same accredited laboratories as our clinic tests. While clinic tests allow for more comprehensive panels, home tests are highly accurate for the parameters they measure.
Do I need a GP referral for a blood test?
No, you don’t need a GP referral. You can book directly with us for any blood test. We are a private clinic offering direct access to comprehensive blood testing.
How old do I have to be to have a blood test?
We will only draw blood from those aged 16 and above due to legal requirements.
How long does it take for the blood test results to come?
If you have used our clinic to complete a blood test, we send off all samples the same day to the lab to be processed. If you have used a home test kit, then once your sample has been sent off the lab will analyse your sample. Results are usually received within 72 hours.
How do I perform the home finger-prick test?
Your home blood test kit will contain easy-to-follow instructions on how to take your own finger blood sample. If you have any concerns or questions prior to using the kit, please contact our phlebotomists who will be happy to assist.
How do I prepare for a blood test?
There is no preparation required prior to taking any of the blood tests. Please simply remember to stay hydrated prior to your appointment. This is to help your veins dilate better to enable a quick and efficient blood sample to be taken and reduce the risks of feeling faint following your blood test.
Please inform the phlebotomist before your test if you are currently taking any blood thinning medication.
Should I fast before my blood test?
Fasting is not required for most blood tests. However, if your profile includes cholesterol tests and you’ve previously had high levels, consider fasting for 8 hours beforehand. While not essential, fasting can provide more accurate results.
Note: Fasting means abstaining from any food and drink, except for water.