Høy tsh normal t4

lav tsh normal t3 og t4 1 lav t4 normal tsh 2 lav tsh symptomer 3 forhøyet tsh symptomer 4 High TSH, normal T4, normal T3 = This is the pattern we’ve been discussing in this post and will usually present with hypothyroid symptoms. High TSH, normal T4, low T3 = This pattern may be an indication that you are having issues with thyroid conversion and most often presents with hypothyroid symptoms. 5 Overview What is a T4 (thyroxine) test? A T4 (thyroxine) test helps diagnose thyroid conditions. Your thyroid is a small, butterfly-shaped gland located at the front of your lower neck, above your clavicle. It’s a part of your endocrine system. 6 Low TSH and high FT4 (and FT3) This is the picture of primary hyperthyroidism and, in this context, TSH is usually undetectable (typically TSH assays). In the UK, Graves’ disease (GD) and toxic multinodular goitre (MNG) are the two most common causes (Fig 1). 7 Tests measuring free T4 – either a free T4 (FT4) or free T4 index (FTI) – more accurately reflect how the thyroid gland is functioning when checked with a TSH. The finding of an elevated TSH and low FT4 or FTI indicates primary hypothyroidism due to disease in the thyroid gland. 8 Hvis en affeksjon er moderat, kan vi ende opp med en normal FT4 og lett forøket TSH (4 - 8 mU/L) som et uttrykk for latent hypotyreose eller en nedsatt. 9 Man finner forhøyet TSH (mellom 3,6 og 10 mIE/L), og normal FT4, ofte uten sikre symptomer eller tegn på hypotyreose. 10 Diagnosis is based on blood levels of decreased FT 4, with a corresponding elevated thyrotropin (i.e., TSH) level in primary causes (thyroid source); the TSH level may be normal to low in. 12