{"id":468763,"date":"2024-09-05T09:53:51","date_gmt":"2024-09-05T09:53:51","guid":{"rendered":"https:\/\/www.arcpointlabs.com\/boston\/tests\/free-thyroxine-index-fti-test\/"},"modified":"2026-06-03T23:03:51","modified_gmt":"2026-06-03T23:03:51","slug":"free-thyroxine-index-fti-test","status":"publish","type":"product","link":"https:\/\/www.arcpointlabs.com\/boston\/tests\/free-thyroxine-index-fti-test\/","title":{"rendered":"Free Thyroxine Index (FTI) Test"},"content":{"rendered":"<p>Experiencing unexplained weight changes, fatigue, hair loss, or sensitivity to temperature? The Free Thyroxine Index (FTI) Test can provide important insights into your thyroid health. <\/p>\n<p> This thyroid function test calculates the ratio of free thyroxine (T4) to thyroxine-binding proteins, offering a clearer picture of how well your thyroid is working. Abnormal FTI levels may suggest hyperthyroidism (overactive thyroid) or hypothyroidism (underactive thyroid). <\/p>\n<p> Healthcare providers use the FTI test alongside other thyroid evaluations to diagnose thyroid disorders, monitor treatment, and guide medication adjustments. <\/p>\n<p> By understanding your FTI results, you can work with your provider to effectively manage thyroid health, address symptoms early, and improve your overall well-being.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Experiencing unexplained weight changes, fatigue, hair loss, or sensitivity to temperature? The Free Thyroxine Index (FTI) Test can provide important insights into your thyroid health. This thyroid function test calculates the ratio of free thyroxine (T4) to thyroxine-binding proteins, offering a clearer picture of how well your thyroid is working. Abnormal FTI levels may suggest [&hellip;]<\/p>\n","protected":false},"featured_media":0,"template":"","meta":{"_acf_changed":false,"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[105,75],"product_tag":[],"class_list":{"0":"post-468763","1":"product","2":"type-product","3":"status-publish","5":"product_cat-general-physician-consult","6":"product_cat-general-wellness","8":"first","9":"instock","10":"shipping-taxable","11":"purchasable","12":"product-type-simple"},"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.0 (Yoast SEO v26.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Free Thyroxine Index (FTI) Test - ARCpoint Labs of Boston<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.arcpointlabs.com\/boston\/tests\/free-thyroxine-index-fti-test\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Free Thyroxine Index (FTI) Test - ARCpoint Labs of Boston\" \/>\n<meta property=\"og:description\" content=\"Experiencing unexplained weight changes, fatigue, hair loss, or sensitivity to temperature? 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Abnormal FTI levels may suggest [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.arcpointlabs.com\/boston\/tests\/free-thyroxine-index-fti-test\/\" \/>\n<meta property=\"og:site_name\" content=\"ARCpoint Labs of Boston\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/ARCpointFranchiseGroup\/\" \/>\n<meta property=\"article:modified_time\" content=\"2026-06-03T23:03:51+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.arcpointlabs.com\/boston\/wp-content\/uploads\/sites\/19\/2023\/12\/arcpoint_logo_dark.png\" \/>\n\t<meta property=\"og:image:width\" content=\"525\" \/>\n\t<meta property=\"og:image:height\" content=\"150\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:site\" content=\"@ARCpointFG\" \/>\n<meta name=\"twitter:label1\" content=\"Price\" \/>\n\t<meta name=\"twitter:data1\" content=\"&#036;50.00\" \/>\n\t<meta name=\"twitter:label2\" content=\"Availability\" \/>\n\t<meta name=\"twitter:data2\" content=\"In stock\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.arcpointlabs.com\/boston\/tests\/free-thyroxine-index-fti-test\/\",\"url\":\"https:\/\/www.arcpointlabs.com\/boston\/tests\/free-thyroxine-index-fti-test\/\",\"name\":\"Free Thyroxine Index (FTI) Test - ARCpoint Labs of Boston\",\"isPartOf\":{\"@id\":\"https:\/\/www.arcpointlabs.com\/boston\/#website\"},\"datePublished\":\"2024-09-05T09:53:51+00:00\",\"dateModified\":\"2026-06-03T23:03:51+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/www.arcpointlabs.com\/boston\/tests\/free-thyroxine-index-fti-test\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.arcpointlabs.com\/boston\/tests\/free-thyroxine-index-fti-test\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.arcpointlabs.com\/boston\/tests\/free-thyroxine-index-fti-test\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Tests\",\"item\":\"https:\/\/www.arcpointlabs.com\/boston\/tests\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Free Thyroxine Index (FTI) Test\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.arcpointlabs.com\/boston\/#website\",\"url\":\"https:\/\/www.arcpointlabs.com\/boston\/\",\"name\":\"ARCpoint Labs of Boston\",\"description\":\"Blood, Drug &amp; DNA Testing\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.arcpointlabs.com\/boston\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.arcpointlabs.com\/boston\/tests\/free-thyroxine-index-fti-test\/#local-main-organization-logo\",\"url\":\"\",\"contentUrl\":\"\",\"caption\":\"ARCpoint Labs of Boston\"}]}<\/script>\n<meta property=\"product:price:amount\" content=\"50.00\" \/>\n<meta property=\"product:price:currency\" content=\"USD\" \/>\n<meta property=\"og:availability\" content=\"instock\" \/>\n<meta property=\"product:availability\" content=\"instock\" \/>\n<meta property=\"product:retailer_item_id\" content=\"46357ba5-27e3-4f5f-bee3-69c24106f390\" \/>\n<meta property=\"product:condition\" content=\"new\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Free Thyroxine Index (FTI) Test - ARCpoint Labs of Boston","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.arcpointlabs.com\/boston\/tests\/free-thyroxine-index-fti-test\/","og_locale":"en_US","og_type":"article","og_title":"Free Thyroxine Index (FTI) Test - ARCpoint Labs of Boston","og_description":"Experiencing unexplained weight changes, fatigue, hair loss, or sensitivity to temperature? 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