{"product_id":"vrij-t4-vrij-t3-vingerprik","title":"Free T4 and Free T3 (fingerstick)","description":"\u003ch2\u003eWhat is Free T4?\u003c\/h2\u003e\n\u003cp\u003eFree T4, also known as thyroxine, is a hormone produced by the thyroid gland. It plays a crucial role in our metabolism and energy balance.\u003c\/p\u003e\n\u003ch2\u003eWhy should you have Free T4 tested?\u003c\/h2\u003e\n\u003cp\u003eMeasuring Free T4 is useful for assessing thyroid function. It is especially relevant when experiencing symptoms of an overactive or underactive thyroid, such as unexplained weight change, fatigue, or mood swings.\u003c\/p\u003e\n\u003ch2\u003eWhat does it indicate?\u003c\/h2\u003e\n\u003cp\u003eFree T4 levels help in evaluating thyroid function. It provides insight into how well the thyroid gland produces and secretes hormones.\u003c\/p\u003e\n\u003ch2\u003eWhat does a high Free T4 level mean?\u003c\/h2\u003e\n\u003cp\u003eA high level of Free T4 may indicate hyperthyroidism, a condition in which the thyroid gland produces too much hormone. This can lead to symptoms such as weight loss, nervousness, and a rapid heartbeat.\u003c\/p\u003e\n\u003ch2\u003eWhat does a low Free T4 level mean?\u003c\/h2\u003e\n\u003cp\u003eA low level of Free T4 may indicate hypothyroidism, where the thyroid gland does not produce enough hormone. This can lead to symptoms such as weight gain, fatigue, and cold intolerance.\u003c\/p\u003e\n\u003ch2\u003eWhat is Free T3?\u003c\/h2\u003e\n\u003cp\u003eFree T3, or triiodothyronine, is another important hormone produced by the thyroid gland. It is even more active than T4 and has a strong influence on metabolism.\u003c\/p\u003e\n\u003ch2\u003eWhy should you have Free T3 tested?\u003c\/h2\u003e\n\u003cp\u003eTesting for Free T3 is useful for a more in-depth evaluation of thyroid function, especially if symptoms or results from other thyroid function tests are contradictory or unclear.\u003c\/p\u003e\n\u003ch2\u003eWhat does it indicate?\u003c\/h2\u003e\n\u003cp\u003eFree T3 levels provide an accurate picture of thyroid activity and are particularly useful in diagnosing hyperthyroidism or in cases where T4 levels are normal but symptoms of a thyroid disorder persist.\u003c\/p\u003e\n\u003ch2\u003eWhat does a high Free T3 level mean?\u003c\/h2\u003e\n\u003cp\u003eHigh levels of Free T3 may indicate hyperthyroidism, which can result in symptoms such as increased heart rate, anxiety, and sleep problems.\u003c\/p\u003e\n\u003ch2\u003eWhat does a low Free T3 level mean?\u003c\/h2\u003e\n\u003cp\u003eLow levels of Free T3 may indicate hypothyroidism, with possible symptoms such as fatigue, depression, and a sluggish metabolism.\u003c\/p\u003e","brand":"BloedCheckup","offers":[{"title":"Default Title","offer_id":47863523279194,"sku":null,"price":41.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0814\/6816\/2394\/files\/EstronE1.webp?v=1755941673","url":"https:\/\/store.bloedcheckup.nl\/nl\/products\/vrij-t4-vrij-t3-vingerprik","provider":"BloedCheckup","version":"1.0","type":"link"}