- The test kit is sent directly to you along with instructions.
- You send completed kit and forms back to ZRT (all shipping is paid).
- ZRT will email your results directly to you alone.
The results are clear but should you need help interpreting your test you can schedule an appointment for a consultation. Click BOOK IT to contact Valerie Robitaille, MS, PhD(c), Holistic Nutritionist
Essential Thyroid Profile
Basic assessment of thyroid function. Includes: free Thyroxine (fT4), free Triiodothyronine (fT3), Thyroid Stimulating Hormone (TSH), Thyroid Peroxidase Antibody (TPO). (Blood Spot Test)
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Our bodies produce several thyroid hormones, but two are absolutely essential: thyroxine or T4, the most abundant in the body; and triiodothyronine or T3, the most active of the two.
The others are also important for optimal health:
TSH – Thyroid Stimulating Hormone Produced by the pituitary gland, TSH acts on the thyroid gland to stimulate production of the thyroid hormones T4 and T3.
Free T4 – Thyroxine The predominant hormone produced by the thyroid gland, T4 is converted to its active form, T3, within cells.
Total T4 – Thyroxine Total T4 includes both free T4 and proteinbound T4, and is an indicator of the thyroid gland’s ability to synthesize, process and release T4 into the bloodstream.
Free T3 – Triiodothyronine T3 is the active thyroid hormone that regulates the metabolic activity of cells.
TPOab – Thyroid Peroxidase An enzyme involved in thyroid hormone production. The body produces antibodies, including TPOab, that attack the thyroid gland in autoimmune thyroiditis and Hashimoto’s. Testing TPOab levels can diagnose these conditions.
Tgbn – Thyroglobulin A protein rich in tyrosine, the residues of which when bound to iodine become the building blocks of T3 and T4. If iodine levels are low, thyroglobulin accumulates, thus high levels indicate insufficient iodine for healthy thyroid function. (Not included – see Elite Thyroid Profile)
30 million adults suffer from thyroid imbalance. Don’t let dysfunction go undiagnosed.
The thyroid is a small butterfly-shaped gland that sits behind and below the Adam’s apple. A wide range of factors from hormone imbalances to mineral deficiencies and environmental pollutants can interfere with thyroid production, leading to health problems.
The American Thyroid Association estimates that as many as 60% of people with thyroid disease are not aware of it. Statistics show that women are seven times more likely than men to develop thyroid problems, facing as much as a one in five chance of developing a problem particularly during the peri-menopause years when hormones start to fluctuate.
Thyroid disease or dysfunction can explain a wide variety of symptoms. Do these sound familiar?
- Weight gain or inability to lose weight despite exercise and diet
- Feeling cold all the time (when others don’t)
- Low energy and stamina, especially in the evening
- Memory lapses or slow/fuzzy thinking
- Dry, thinning, itchy skin
- Dry or brittle hair and nails
- Hair loss
- Irregular bowel habits
- Menstrual irregularities
- Sudden or significant weight loss
- Rapid or irregular heartbeat
- Nervousness or irritability
Dried blood spot is a form of collection where patients place blood drops on a filter card after a finger prick with a lancet. This process offers distinct advantages over serum because it eliminates the need for a blood draw – saving you time and money. It’s also a convenient way to assess blood levels of sex steroid hormones.
Once dry, blood spot cards are extremely stable for shipment and storage, and the dried blood format offers excellent correlation with serum tests.
Why measure in blood spot?
Blood spot testing is the ideal method for measuring cardiometabolic markers, thyroid hormones, vitamin D and other analytes such as insulin, blood lipids, Vitamin D, and elements like lead and magnesium.
ZRT developed the science for accurately measuring hormones in dried blood spot and is currently the only lab to offer this method commercially. While serum testing is widely accepted, the lesser known blood spot test method offers results that have been proven equivalent to serum.