{"product_id":"nutripath-full-thyroid-hormone-blood-panel","title":"Full thyroid hormone blood panel","description":"\u003ch2 class=\"product-marketing-headline\"\u003eThe thyroid test your GP rarely orders in full\u003c\/h2\u003e\u003cp class=\"product-tagline\"\u003e\u003cem\u003eThe three marker thyroid panel your GP rarely orders in full. TSH plus both active hormones, free T3 and free T4.\u003c\/em\u003e\u003c\/p\u003e\u003cp class=\"product-brand-attribution\"\u003eTest processed by \u003cstrong\u003eNutriPath\u003c\/strong\u003e\u003c\/p\u003e\u003cdiv class=\"product-short-description\"\u003e\u003cp\u003eMost GP thyroid testing starts and ends with TSH. This panel adds free T3 (the active hormone your cells actually use) and free T4 (the storage form). Essential for anyone with fatigue, cold intolerance, weight gain, hair loss or brain fog where TSH alone has been called normal.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv class=\"product-long-description\"\u003e\u003cp\u003eTSH is a pituitary signal, not a measure of thyroid function. Your thyroid can be underperforming while TSH sits in the so called normal range, particularly in the subclinical territory between 2.5 and 4.5 mIU\/L where many functional practitioners consider intervention worthwhile. The only way to know what your thyroid is actually producing, and whether your body is converting the storage hormone T4 into the active hormone T3 properly, is to measure both free T3 and free T4 alongside TSH. This panel does exactly that. It is the starting point for anyone whose thyroid symptoms have been dismissed, anyone with a family history of thyroid disease, anyone on thyroid medication wanting to check their conversion, and anyone in perimenopause where thyroid changes are common but often masked by hormonal symptoms.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv class=\"product-ingredients\"\u003e\n\u003ch3\u003eWhat it measures\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBiomarker\u003c\/th\u003e\n\u003cth\u003eSample\u003c\/th\u003e\n\u003cth\u003eReference Range\u003c\/th\u003e\n\u003cth\u003eWhat it tells you\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eTSH (Thyroid Stimulating Hormone)\u003c\/td\u003e\n\u003ctd\u003eBlood (SST)\u003c\/td\u003e\n\u003ctd\u003e0.5 to 2.5 mIU\/L optimal, up to 4.5 accepted\u003c\/td\u003e\n\u003ctd\u003eThe pituitary signal that drives the thyroid. High TSH with low thyroid hormones indicates hypothyroidism. Functional practitioners often consider TSH above 2.5 mIU\/L with symptoms worth investigating.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFree T4 (Thyroxine)\u003c\/td\u003e\n\u003ctd\u003eBlood (SST)\u003c\/td\u003e\n\u003ctd\u003e12 to 22 pmol\/L\u003c\/td\u003e\n\u003ctd\u003eThe storage form of thyroid hormone. Most thyroid medication (thyroxine) replaces this form. Low fT4 with high TSH confirms a thyroid production problem.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFree T3 (Triiodothyronine)\u003c\/td\u003e\n\u003ctd\u003eBlood (SST)\u003c\/td\u003e\n\u003ctd\u003e3.5 to 6.5 pmol\/L\u003c\/td\u003e\n\u003ctd\u003eThe biologically active hormone. Your cells use T3, not T4. Low free T3 despite normal TSH and T4 is a common functional pattern that standard testing misses. Often reflects poor conversion due to stress, selenium deficiency or calorie restriction.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-how-to-take\"\u003e\n\u003ch3\u003eHow to collect and what to expect\u003c\/h3\u003e\n\u003cp\u003eNo fasting required, but morning collection preferred. If you take thyroid medication, discuss with your prescriber whether to hold the dose until after collection. Book at any NutriPath referral centre. Results in 3 to 5 business days.\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-warnings\"\u003e\n\u003ch3\u003eWarnings and cautions\u003c\/h3\u003e\n\u003cp\u003eThis is a health information test. Do not start, stop or change thyroid medication based on results. If you are currently on thyroxine or any thyroid medication, collection timing and dose timing affect results. Discuss results with your GP or endocrinologist before any medication decisions.\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-faqs\"\u003e\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eMy GP only tested TSH. Why is that not enough?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eTSH measures the pituitary signal. If TSH is normal, the assumption is thyroid function is normal. But thyroid dysfunction can exist with normal TSH (subclinical hypothyroidism, poor T4 to T3 conversion, thyroid resistance). Measuring free T3 and free T4 catches patterns that TSH alone misses.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eWhat are optimal ranges?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eLab reference ranges are wide and reflect population averages, not optimal health. Functional optimal ranges: TSH 0.5 to 2.5 mIU\/L, fT4 in the upper half of the reference range, fT3 in the upper third of the reference range. Many people feel substantially better when they hit these optimal ranges rather than just normal.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eShould I add thyroid antibodies?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eIf you have any thyroid symptoms, a family history of thyroid disease or other autoimmune conditions, yes. The Thyroid Antibodies test (TPOAb and TgAb) is the only way to detect Hashimoto's, the most common cause of hypothyroidism. Many people have autoimmune thyroid disease years before TSH shifts.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eWhen is the best time to test?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eMorning, on an empty stomach if possible. If you are on thyroid medication, standard practice is to hold the morning dose until after collection, but discuss this with your prescriber first.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-clinical-evidence\"\u003e\n\u003ch3\u003eClinical evidence\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/17389701\/\" target=\"_blank\" rel=\"noopener\"\u003eTSH reference ranges and subclinical hypothyroidism\u003c\/a\u003e: Evidence that optimal TSH ranges may be narrower than standard lab reference.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/19049470\/\" target=\"_blank\" rel=\"noopener\"\u003eT4 to T3 conversion and tissue thyroid status\u003c\/a\u003e: Review of peripheral thyroid hormone metabolism and its clinical implications.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/12694022\/\" target=\"_blank\" rel=\"noopener\"\u003eSelenium and thyroid hormone conversion\u003c\/a\u003e: Selenium's role in the deiodinase enzymes that convert T4 to T3.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"NutriPath","offers":[{"title":"Default Title","offer_id":52591881781522,"sku":"OPTI-NUTRIPATH-FULL-THYROID-HORMONE-BLOOD-PAN","price":139.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0557\/2087\/0083\/files\/nutripath-full-thyroid-hormone-blood-panel.jpg?v=1786431177","url":"https:\/\/optilabs.com.au\/products\/nutripath-full-thyroid-hormone-blood-panel","provider":"OptiLabs by Evergreen Doctors","version":"1.0","type":"link"}