An excellent profile to investigate thyroid function. Includes TSH as well as key thyroid hormones FT4 and FT3.
This monitoring profile is an excellent test to assess thyroid function. It includes thyroid stimulating hormone (TSH) as well as free T4 (FT4) and free T3 (FT3). Most thyroid hormones are bound to proteins in the blood. This test measures the level of free or unbound thyroid hormones which are either available to be converted or are biologically active.
TSH is produced by the pituitary gland to stimulate the thyroid to produce thyroid hormones (mostly T4). An elevated TSH often signifies that the thyroid is struggling to produce enough T4 for the body's needs.
This test is for individuals who wish to diagnose a thyroid condition or who are receiving treatment for thyroid disease. It is important that hormone levels are normalised and remain so. If too much or too little thyroid medication is taken, the balance of these hormones can be thrown out causing further symptoms.
Thyroid problems affect up to 3 % of the adult population. And although symptoms are non-specific and often begin mildly they may become debilitating if left untreated.
Symptoms of hypothyroidism include lethargy and excessive sleeping, difficulty in losing weight or constant weight gain despite not eating more, feeling cold when others are warm, constipation, dry hair and brittle nails, depression, slow heartbeat, muscle aches and pains and fertility problems. It can result in myxoedema, Graves' disease and Hashimoto's disease.
Symptoms of hyperthyroidism include feeling fidgety and nervous, trouble sleeping, tremors, unexplained weight loss, frequent bowel movements or diarrhoea, feeling hot and sweaty, hair loss, palpitations, muscle weakness and fertility problems.
Thyroid Stimulating Hormone is produced in the pituitary gland and stimulates the thyroid gland to produce thyroid hormones thyroxine (T4) and triiodothyronine (T3).
High levels of TSH indicate an underactive thyroid while low levels indicate an overactive thyroid. In primary pituitary failure, a low TSH will be associated with an underactive thyroid.
Thyroxine (T4) is one of two hormones produced by the thyroid gland. Most T4 is bound to carrier proteins in the blood - this test measures the level of T4 which is free, or unbound, circulating in your blood.
High levels of free thyroxine can indicate an overactive thyroid while low levels can indicate an underactive thyroid.
Triiodothyronine (T3) is one of two thyroid hormones produced by the thyroid gland. Most T3 is bound to protein in the blood. Free T3 measures the level of T3 that is free, or unbound to protein, and is available to regulate metabolism.
We will send you your Thyroid Monitoring finger-prick blood and test sample collection kit which contains everything you need to take your blood and sample in the comfort of your own home. If you are unsure about completing a finger-prick blood sample collection you will have the opportunity to select a clinic-based venous blood sample collection or choose to go our London laboratory during the checkout process.
Your Thyroid Monitoring test includes 1st class postage and packaging for you to send your blood and sample directly to our laboratory for analysis. If you live in an area where you cannot rely on the post or you simply want to ensure that your sample arrives at the laboratory the following day, you may wish to send your blood and sample guaranteed next day delivery for extra reassurance.