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89 Possible Causes for Free Thyroxine Decreased

  • Hypothyroidism

    In secondary hypothyroidism, free T4 and serum TSH are low (sometimes TSH is normal but with decreased bioactivity).[smartypance.com] At day 61, her thyroid-stimulating hormone level had decreased (6.12 μIU/ml), her free triiodothyronine (2.69 pg/ml) and thyroxine (1.56 ng/ml) levels had increased, and her[ncbi.nlm.nih.gov] Serum and serum-free triiodothyronine and thyroxine (T 3, T 4 ) are decreased.[medical-dictionary.thefreedictionary.com]

  • Puerperium

    If the TSH level is abnormal, thyroid stimulating antibodies, free thyroxine index (FTI), and radioactive iodine uptake (RIU) should be checked to distinguish this disorder[csh.org.tw] If the TSH level is abnormal, check thyroid stimulating antibodies, free thyroxine index (FTI), and radioactive iodine uptake (RIU) in order to distinguish this disorder from[emedicine.medscape.com] It is decreased during the thyrotoxicosis stage and increased during the hypothyroid phase.[csh.org.tw]

  • Vomiting of Pregnancy

    […] thyroid-stimulating hormones and increase free thyroxine (T4) (Hershman, 1999) with concomitant gestational thyrotoxicosis occuring in some women with hyperemesis gravidarum[rcm.org.uk] […] largely attributed to hormonal changes, including oestrogen, progesterone (Gadsby et al, 2000) and human chorionic gonadotrophin (hCG) (Glick and Dick, 1999). hCG appears to decrease[rcm.org.uk]

  • Hashimoto Thyroiditis

    RESULTS: In the entire series, thyrotropin values significantly increased during follow-up, while free thyroxine values decreased and the proportion of children with a thyroid[ncbi.nlm.nih.gov] No changes in thyrotropin, free thyroxine and free triiodothyronine were observed in any treatment group.[ncbi.nlm.nih.gov] Thyroid function tests found TSH 100 mIU/l, free thyroxine level 0.9 pmol/l (normal values 11.5-21.8), anti-thyroid peroxydase antibodies strongly positive 1,000 IU/ml, and[ncbi.nlm.nih.gov]

  • Aneurysm

    The patient had no pituitary hormone-related symptoms or signs, but elevated prolactin and decreased free thyroxin levels are shown on blood examination.[ncbi.nlm.nih.gov]

  • Hyperthyroidism

    RESULTS: After the treatment, the free triiodothyronine and thyroxine levels in both groups decreased.[ncbi.nlm.nih.gov] The three patients showed decreased thyroid-stimulating hormone (TSH), with or without elevated free triiodothyronine (FT3) and free thyroxine (FT4) 2 weeks after injection[ncbi.nlm.nih.gov]

  • Nontoxic Goiter

    Serum free thyroxine and triiodothyronine indices decreased following resection but achieved normal levels within 6 to 12 months.[ncbi.nlm.nih.gov] In 19 patients the serum Tg increased, in 1 it decreased, and in 19 no significant alteration was observed.[ncbi.nlm.nih.gov]

  • Graves Disease

    A positive test result s in a decreased or normal TSH levels, elevated free thyroxine T4 for a diagnosis of hyperthyriodism.[physio-pedia.com]

  • Struma Ovarii

    Her thyroid profile showed elevated thyroxine levels and decreased thyroid-stimulating hormone (TSH) levels. Laboratory work-up showed the following results.[thetrp.net] Thyroid profile: Free T 3 - 6.4 pg/ml, free T 4 - 3.4 ng/dl, TSH - 0.35 U/ml. The values are inductive of hyperthyroidism.[thetrp.net]

  • Iodine Poisoning

    […] and Thyroid hormone thyroxine (T4) and triiodothyronine (T3) concentrations in free form that correlate to the state of hypothyroidism or hypothyroidism; A presence of goiter[symptoma.com] Levels are heightened in case of hypothyroidism and decreased in cases of hyperthyroidism or thyrotoxicosis; Thyroglobulin which is secreted into blood in small concentrations[symptoma.com]

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