{"product_id":"nutripath-complete-thyroid-workup-with-antibodies","title":"Complete thyroid workup with antibodies","description":"\u003ch2 class=\"product-marketing-headline\"\u003eWhen something feels clearly off and nothing has been found\u003c\/h2\u003e\u003cp class=\"product-tagline\"\u003e\u003cem\u003eThe complete thyroid workup in one blood draw. All five thyroid markers plus reverse T3 and antibodies. The test you want when something is definitely wrong but nothing has been found.\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\u003eCombines TSH, free T3, free T4, reverse T3 (the brake pedal on thyroid function), TPO antibodies and Tg antibodies. The gold standard panel for complex thyroid presentations, conversion issues, or when previous testing has missed the pattern.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv class=\"product-long-description\"\u003e\u003cp\u003eWhen a simple TSH test returns normal but symptoms persist, when thyroid medication is not producing the expected result, or when you want a comprehensive one time baseline, the extensive thyroid panel is what you want. It measures all the markers that shape the thyroid picture: TSH (the pituitary signal), free T4 (the storage hormone), free T3 (the active hormone), reverse T3 (the inactive metabolite that competes with T3 at receptors), TPO antibodies (catches Hashimoto's), and Tg antibodies (adds specificity to autoimmune detection). Reverse T3 is the critical addition that standard testing misses. Under stress, illness or calorie restriction, your body shunts T4 down the reverse T3 pathway instead of converting it to the active T3. High reverse T3 with a low T3 to rT3 ratio is a common pattern in chronic illness, burnout and long term dieting, and explains persistent hypothyroid symptoms in people whose other markers look fine.\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\u003c\/td\u003e\n\u003ctd\u003eBlood (SST)\u003c\/td\u003e\n\u003ctd\u003e0.5 to 2.5 mIU\/L optimal\u003c\/td\u003e\n\u003ctd\u003eThe pituitary signal. Context for interpreting thyroid hormone levels.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFree T4\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. Most thyroid medication replaces this.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFree T3\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.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReverse T3\u003c\/td\u003e\n\u003ctd\u003eBlood (SST)\u003c\/td\u003e\n\u003ctd\u003eUnder 250 pg\/mL, ratio to T3 matters more\u003c\/td\u003e\n\u003ctd\u003eThe inactive metabolite. Elevated rT3 blocks T3 at the receptor level and explains persistent hypothyroid symptoms despite normal other markers. The T3 to rT3 ratio is more informative than rT3 alone.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTPO Antibodies\u003c\/td\u003e\n\u003ctd\u003eBlood (SST)\u003c\/td\u003e\n\u003ctd\u003eUnder 35 kIU\/L\u003c\/td\u003e\n\u003ctd\u003eCatches Hashimoto's autoimmune activity.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTg Antibodies\u003c\/td\u003e\n\u003ctd\u003eBlood (SST)\u003c\/td\u003e\n\u003ctd\u003eUnder 40 kU\/L\u003c\/td\u003e\n\u003ctd\u003eAdds specificity to autoimmune detection.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eT3 : rT3 Ratio\u003c\/td\u003e\n\u003ctd\u003eCalculated\u003c\/td\u003e\n\u003ctd\u003eAbove 20 preferred\u003c\/td\u003e\n\u003ctd\u003eOne of the most useful ratios in complex thyroid cases. Low ratio indicates T4 is being shunted to inactive rT3, common in stress, chronic illness, and prolonged 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. Morning collection preferred. If on thyroid medication, discuss timing with your prescriber. Book at any NutriPath referral centre. Results and detailed interpretive report in 5 to 7 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. Complex thyroid patterns (especially those involving reverse T3 and antibodies) benefit from interpretation by a practitioner familiar with functional thyroid medicine.\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\u003eWhy include reverse T3?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eBecause reverse T3 is the commonest missing piece in complex thyroid cases. Under stress, illness or dieting, your body preferentially converts T4 into inactive reverse T3 rather than active T3. This causes hypothyroid symptoms despite normal looking TSH, T4 and even T3 results. Without measuring rT3 you miss this pattern entirely.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eHow is this different from the basic thyroid panel?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eThe basic panel measures TSH, fT3 and fT4. This extensive panel adds reverse T3 and both thyroid antibodies. It is the appropriate test for complex cases, treatment resistant hypothyroidism, fatigue syndromes, and anyone wanting a complete one time baseline.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eI am on medication and still feel bad. Which test do I need?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eThis one. Medication optimisation requires knowing not just TSH but how well T4 is converting to T3, whether reverse T3 is competing at the receptor, and whether autoimmune activity is ongoing. All these are in this panel.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eHow often should I retest?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eComplete panels are typically done once to establish baseline and identify patterns, then ongoing monitoring uses whichever subset of markers is most relevant (TSH and fT4 for medication titration, antibodies every 6 to 12 months for autoimmune monitoring, fT3 and rT3 when addressing conversion issues).\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\/17956631\/\" target=\"_blank\" rel=\"noopener\"\u003eReverse T3 and the low T3 syndrome\u003c\/a\u003e: Review of reverse T3 physiology and clinical significance.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/19822864\/\" target=\"_blank\" rel=\"noopener\"\u003eType 3 deiodinase and reverse T3 production\u003c\/a\u003e: The enzyme biology behind reverse T3 elevation in stress and illness.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/28721393\/\" target=\"_blank\" rel=\"noopener\"\u003eComprehensive thyroid assessment in clinical practice\u003c\/a\u003e: Consensus approach to complete thyroid evaluation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"NutriPath","offers":[{"title":"Default Title","offer_id":52591881027858,"sku":"OPTI-NUTRIPATH-COMPLETE-THYROID-WORKUP-WITH-A","price":269.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0557\/2087\/0083\/files\/nutripath-complete-thyroid-workup-with-antibodies.jpg?v=1786431173","url":"https:\/\/optilabs.com.au\/products\/nutripath-complete-thyroid-workup-with-antibodies","provider":"OptiLabs by Evergreen Doctors","version":"1.0","type":"link"}