Advanced Thyroid Blood Test
Welzo's Advanced Thyroid Blood Test checks your body's thyroid production as well as antibodies, hormones and important vitamins and minerals. This test can be used to optimise your thyroid health and determine if treatment is necessary.
Our kits are suitable for human use only and for adults aged 18+.
- Thyroid stimulating hormone (TSH)
- Free Tri-iodothyronine (T3)
- TPOAb
- Vitamin D
- B12 Folate
- Free Thyroxine (FT4)
- TGAb
- Ferritin
- Vitamin B12
- Thyroxine (T4)
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- Biomarkers
- Information
Free Thyroxine (T4)
Thyroxine (T4) is the hormone that has several important functions in the body, including speeding up the rate of metabolism, growth and energy levels. We test the thyroxine within the body to get an indicator of how well the thyroid is functioning. There are different treatments depending on if the thyroid is under or over the normal levels.
Free tri-iodothyronine (T3)
FT3 or free tri-iodothyronine is one of the two critical hormones produced by the thyroid gland. Its deficiency/excess is responsible for most of the thyroid related health issues because of its stronger impact even though it constitutes the lesser fraction as compared to the other hormone, FT4. Menopause blood test detects the amount of FT3 which is not attached to a protein and help to understand thyroid functioning.
Thyroid peroxidase antibodies (TPOAb)
Thyroid peroxidase (TPOAb) is an enzyme that converts T4 in to the active T3. The TPO test analyses if antibodies are attacking the thyroid gland and impairing its function.
Vitamin D
Vitamin D is a vitamin that's essential for many functions in your body, including bone and muscle health. Vitamin D can be found in food, supplements, and fortified foods. If you don't get enough vitamin D, you may develop osteoporosis or muscle weakness. An average vitamin D level is 20 to 50 ng/mL. If you have a low vitamin D level, we may recommend that you take a vitamin D supplement or eat foods fortified with vitamin D.
Thyroid stimulating hormone (TSH)
TSH (Thyroid Stimulating Hormone) or thyrotropin is secreted by the pituitary gland, located in the head, and can help identify cases of hypothyroidism and hyperthyroidism. Both the excess and under-secretion of TSH can lead to weight loss, anxiety, palpitations, irregular sleep patterns and irregular menstrual cycles. Hypothyroidism is majorly associated with overlapping symptoms such as menopause.
Thyroglobulin antibodies (TgAb)
The thyroglobulin protein (TgAb) is produced in the thyroid gland. It makes hormones T3 and T4 which aid in the control of metabolism, growth and mood wings. The test is done to check the level of antibodies that the body has made in response to the compound thyroglobulin.
Ferritin
Ferritin is the protein that stores iron in the body. Iron is needed to provide muscles with oxygen so that they receive the energy they need to function properly. Ferritin will release the iron when needed and is kept within the body's cells, most commonly found in the liver. We check ferritin levels to ensure that there is proper storage of iron in the body's cells otherwise the iron will be depleted quickly.
Vitamin B12
Vitamin B12 is a water-soluble vitamin that can be naturally present in foods or as supplements. The b12 vitamin aids in the production of red blood cells that carry oxygen around the body. It also plays a role in the development and function of the nervous system.
Symptoms of Thyroid Issues
- Tiredness
- Moodswings
- Hyperactivity
- Anxiety, nervousness, irritability
- Persistent thirst
- Weight gain
- Depression
- Muscle aches
- Dry skin and hair
- Sensitivity to cold
Additional Insight from Dr Sameer Nakedar, MBBS, MRCGP, PGCert
"Some vitamins and minerals support your thyroid function; therefore, getting optimal vitamins helps. However, abnormal levels of specific vitamins can also cause various symptoms, sometimes similar to thyroid disorders. Understanding these vitamin and mineral levels can help identify or exclude a cause for these symptoms.
The advanced check also includes inflammatory markers. In some situations, thyroid disorders are caused by autoimmune disorders, meaning the body’s natural defence system (the immune system) is not functioning adequately. In some cases, thyroid disease is a result of autoimmune problems."
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Experts Opinion
"A basic thyroid function test can help you understand if your thyroid function is normal, overactive, or underactive. The advanced check also includes inflammatory markers. In some situations, thyroid disorders are caused by autoimmune disorders, meaning the body’s natural defence system (the immune system) is not functioning adequately. In some cases, thyroid disease is a result of autoimmune problems."

How to take a Advanced Thyroid Blood Test Test
Collecting a blood sample for your finger prick home test is straightforward. Watch the video below for more details on how to take a home blood test.
How Welzo Home Tests Work
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Pick your home test
We have a wide range of tests to cover your health needs. Order with next day United Kingdom delivery and avoid sitting in a doctor's office or clinic. Use our quiz to find the right test for you.
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Take your test
Activate your test and collect your sample in the morning. Return your sample on the same day, using the prepaid shipping label provided. Samples use a simple finger prick collection method that takes around 5 minutes to complete.
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Results within 48 hours
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Advanced Thyroid Blood Test Information
Specification of Advanced Thyroid Blood Test
- Test name: Advanced Thyroid Blood Test
- Also known as & related tests: Thyroid Test, Thyroid Function
- Biomarkers:
- Test tube: SST (Gold microtainer)
- Brand: Welzo
- Turn around time: Approx. 24 hours
- Lab test ranges:
- Test Kit Marking: MHRA/UKCA
- Location of Lab: United Kingdom
What is a Advanced Thyroid Blood Test?
A Advanced Thyroid Blood Test is a home health test offered by Welzo. The Advanced Thyroid Blood Test can be taken from the comfort of your home using a finger prick sample, which is then sent back to our lab for analysis and interpretation.
What does a Advanced Thyroid Blood Test for?
A Advanced Thyroid Blood Test tests for the following:
.What are the benefits of a Advanced Thyroid Blood Test?
Checking your health through the use of Advanced Thyroid Blood Test is an important way to track your health. Home testing offers the convenience of conducting health assessments in the comfort of your own home, while enabling quicker, more private results without the need for visiting a healthcare facility.
Can a GP review my Advanced Thyroid Blood Test?
Yes, Welzo offers a GP review service for the Advanced Thyroid Blood Test. Follow the link if you would like to have an online GP appointment with your Advanced Thyroid Blood Test.
Are Advanced Thyroid Blood Tests available on the NHS?
The NHS offers Advanced Thyroid Blood Tests subject to eligibility requirements, consultations and local guidelines.
Advanced Thyroid Blood Test Kit and Ordering
How can a Advanced Thyroid Blood Test be ordered?
A Advanced Thyroid Blood Test can be ordered online through Welzo's secure checkout. Select the Advanced Thyroid Blood Test and add the patient's name and details, then checkout for next-day delivery.
What is included in the Advanced Thyroid Blood Test test kit?
The Advanced Thyroid Blood Test contains the following items in the test kit:
- 1 x UN3373 Test Kit for Biological Substances Category B (test kit design may vary from images displayed online depending on the test selected.
- 1 x Free Return Label
- 1 x Finger Prick Lancet / Urine Sample Pouch or Swab (depending on the test ordered)
- 1 x Cleansing Wipe/ Alcohol Swab
- SST (Gold microtainer)
Advanced Thyroid Blood Test Biomarkers and Results
What biomarkers are tested for in a Advanced Thyroid Blood Test?
The Advanced Thyroid Blood Test checks for the following biomarkers:
What are the results ranges for a Advanced Thyroid Blood Test?
Advanced Thyroid Blood Test reference ranges vary based on age, sex, population sample and numeric test result ranges. However, once you complete your tests, you will receive clear reference ranges for your Advanced Thyroid Blood Test.
What is a normal test range for Advanced Thyroid Blood Test?
The Advanced Thyroid Blood Test range will be provided on the advanced Welzo reporting panel which will factor in multiple aspects such as age, population size comparison and biological sex.
Advanced Thyroid Blood Test Procedure and Timing
When should a Advanced Thyroid Blood Test be taken?
It is best to take a Advanced Thyroid Blood Test first thing in the morning.
How long does a Advanced Thyroid Blood Test take?
The typical turnaround for a Advanced Thyroid Blood Test is 24 hours from receipt at the Welzo laboratory, Monday to Thursday. However, results may come back faster or slower depending on how busy the Welzo laboratory is and if you have requested any biomarkers that take longer to test for. In this case, results can take up to 5 days.
Are there any special preparations required before taking the Advanced Thyroid Blood Test (e.g., fasting)?
We will let you know via email if there are any special requirements for the Advanced Thyroid Blood Test. However, typically we recommend you take a Advanced Thyroid Blood Test first thing in the morning, fasted.
What is the best time to post my Advanced Thyroid Blood Test?
The best time to return your Advanced Thyroid Blood Test sample is Monday to Thursday, before 14:00 to ensure the product arrives at our lab on time for same-day analysis.
What sample is required for a Advanced Thyroid Blood Test?
The Advanced Thyroid Blood Test requires a capillary blood sample using a SST (Gold microtainer) that is collected from a finger-prick blood sample.

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