Our Essential Thyroid Premium Silver (was Thyroid Check PLUS SIX) includes the classically tested components of thyroid function - TSH, T4, free T3, free T4, Thyroid Peroxidase Antibodies, Thyroglobulin Antibodies, Cortisol + Magnesium - for an in depth analysis of your thyroid function.
Is this blood test right for you?
Do you want to find out more about your thyroid health? Do you have symptoms affecting your mood, energy levels, skin and hair quality? If you're looking for a Essential Thyroid check then this is the test for you!
What tests are included in this profile?
Thyroid Antibodies, so is useful when investigating autoimmune thyroiditis. It also includes the standard TSH, T4, free T3, free T4, Cortisol + Magnesium.
Blood Test Explained
Please see below for a breakdown of test information, click each tab to find out more.
Thyroid related blood testing
TSH (thyroid stimulating hormone) is a hormone manufactured in the pituitary gland (found in the brain). It s role is to stimulate thyroxine production in the thyroid gland (found in the neck). A high level within a health screening is associated with an underactive thyroid gland (hypothyroidism) and a low level is found if the thyroid gland is over-active (hyperthyroidism). Changes in the TSH level alone can indicate underlying thyroid problems even if the thyroxine levels are normal.
Free T4 (free thyroxine) is the active form of thyroxine, released from the thyroid gland in the neck. Its role is to control metabolism - release of energy from all cells of the body. A lack of thyroxine leads to, for example, tiredness and weight gain, whereas an excess will lead to weight loss, rapid heart rate and anxiety. It is generally believed that this level (FT4) is the most reliable indicator of thyroid status - ie whether the gland is over-active (hyperthyroidism) or underactive (hypothyroidism).
Total T4 A Total T4 measurement measures ALL of the T4 hormone – bound and free. Most endocrinologists find “Free T4” more useful, but we still include T4 in this profile as some doctors still specifically request it when investigating thyroid function.
Free T3 (Free Triiodothyronine) - This is one of two hormones produced by the thyroid gland. This measures the level of T3 that is 'free' and is able to regulate metabolism.
Thyroglobulin Antibodies Thyroglobulin is around half of the protein content for the Thyroid gland, which is used to store T4 and T3 Thyroid hormone molecules in the Thyroid. Conditions such as hyperthyroidism, Thyroiditis or goitre will cause an elevation of the serum Thyroglobulin. The main purpose of this testing is to indicate as a tumour marker for monitoring patients with differentiated thyroid cancer after a total thyroidectomy.
Thyroid Peroxidase Antibodies This is an enzyme found in the thyroid gland mostly. This allows the production of thyroid hormones.
Cortisol As Cortisol decreases TSH, thereby decreasing thyroid hormone production, as well as inhibiting T4 to T3 conversion, measuring Cortisol is important and is now included in all Blue Horizon postal Thyroid Profiles.
Magnesium Magnesium is very important and relates to the Thyroid gland in many ways, in fact the thyroid cannot function without magnesium as it is responsible for helping make more T4 within the Thyroid gland. It also helps in converting inactive T4 into an active form of T3, this allows the metabolism of body cells which are enhanced by T3 (unlike inactive T4).
A deficiency in Magnesium has also been linked to goiter and/or enlarged thyroid gland.
Weight loss with increased appetite Warm/clammy skin Shortness/loss of breath Feeling warm and sweating excessively Feeling hyperactive Rapid heartbeat Insomnia Osteoporosis Raised libido Irregular bowel movements Diarrhoea Thin hair Fertility problems Irritability
Fatigue Feeling cold constantly Weight gain and/or difficulty losing weight Brain fog Issues with Breathlessness Low basal temperature Insomnia Hair loss Raised cholesterol Low basal temperature Dry hair and skin Loss of libido Constipation Depression Mood swings Fertility problems
Information for this blood test
Test Name: Thyroid Premium Silver
GP Referral: GP Referral is included
Target Turn Around Time in working days: 2 Working Days
Further information. If you require any information on this test please call our team on: 0800 999 1110
How do you get a Blood Test?
1. Order Online. Select your required blood test from our test menu or call us on 0800 999 1110.
2. Arrange your sample collection appointment/blood draw.(ensure you have checked if you need to fast before attending your blood draw)
3. Wait for your blood test results, once they’re ready we will send them to you via email within the turnaround time stated on the website.
Do I need a Doctors referral to use this service?
No you do not require a Doctor’s Referral, we provide one when you have placed an order. This is free of charge, and a consultation is not required unless stated on certain tests.
How soon will I get my blood test results?
The turnaround time is a guide only, and will sometimes depend upon assay run schedules. Most results are provided within the time frame provided, but there may be technical difficulties, or the results may need to be re-run to check accuracy, or our Doctor may be held up passing comment. We can easily give you a status report, so please do email us or phone us to chase results, not the Laboratory itself.
Where can I get my blood taken if I order a vacutainer kit?
If you do not know of a professional nurse or phlebotomist we can refer you to a BMI Hospital or arrange a *Nurse home visit (charges will apply). PLEASE NOTE: You cannot attend at a Spire Hospital or the Doctors Laboratory (TDL) for your blood draw using our kit as our postal service is dealt with by a completely separate laboratory network.
What is the difference between reported and unreported results?
1. Reported results will be sent to the GP for comment, this process can take up to two working days to complete in addition to the stated turnaround time for results.
2. If you select unreported results, then you choose not to have the interpretation of our GP and they will be sent directly to you. This is advisable if you already have a specialist to share the results with or are able to interpret them yourself. In the event of any results being of a critical nature we will always be in contact to make you aware of this.
**Currently we are unable to provide Nurse visits due to the COVID-19 Pandemic.