Spuriously high concentration of serum free thyroxine due to anti-triiodothyronine antibodies.
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چکیده
منابع مشابه
Serum free thyroxine and free triiodothyronine concentrations in pregnancy.
Blood was taken from women in each trimester of pregnancy at routine antenatal visits. Further samples were collected from an age matched control group of euthyroid women taking no medication. Free triiodothyronine and free thyroxine concentrations were measured by direct radioimmunoassay (Amerlex Kit methods, Amersham International, Amersham, Buckinghamshire).2 These free hormone assays use th...
متن کامل[Studies on thyroid hormone autoantibody in two euthyroid cases with spuriously high value of serum free triiodothyronine].
Spuriously high value of serum free triiodothyronine (FT3: Amerlex free T3 kit, Amersham, UK.) was noted accidentally on routine laboratory examination of two clinically euthyroid patients (case 1: FT3; 18.5 pg/ml, FT4; 1.1 ng/dl, T3; 103 ng/dl, T4; 8.2 micrograms/dl, TSH; 1.74 microU/ml, case 2: FT3; 8.5 pg/ml, FT4; 1.1 ng/dl, T3; 137 ng/dl, T4; 8.9 micrograms/dl, TSH; 1.45 microU/ml), the for...
متن کاملEvaluation of serum triiodothyronine and adjusted triiodothyronine (free triiodothyronine index) in pregnancy.
We measured serum thyroxine (free and total), triiodothyronine (free and total), thyroxine-binding globulin, and triiodothyronine uptake by talc in 97 normal men and 50 pregnant women. Mean serum thyroxine and triiodothyronine concentrations were higher in the pregnant subjects (104 vs. 78 mug/liter and 1.69 vs. 1.30 mug/liter) because of a higher mean thyroxine-binding globulin concentration (...
متن کاملEvaluation of Total Antioxidant, Total Calcium, Selenium, Insulin, Free Triiodothyronine and Free Thyroxine Levels in Cows with Ketosis
Ketosis is an important metabolic disease of high milk-producing cows. There are significant changes in many metabolite and hormonal concentrations in metabolic diseases. This study was carried out to assess the concentrations calcium (Ca), selenium (Se), total antioxidant (TAOC), insulin, free triiodothyronine (fT3) and free thyroxine (fT4) in cows with subclinical and clinical ketosis. This s...
متن کاملRelevance of increased serum thyroxine concentrations associated with normal serum triiodothyronine values in hypothyroid patients receiving thyroxine: a case for "tissue thyrotoxicosis".
Fifteen patients receiving standard thyroxine replacement therapy (100-200 micrograms daily) for primary hypothyroidism and who had persistently raised free thyroxine concentrations in their serum were investigated to see whether the dose being given was too high. In addition to the usual thyroid hormone assays systolic time intervals (which indicate left ventricular contractility) were calcula...
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ورودعنوان ژورنال:
- Clinical chemistry
دوره 41 1 شماره
صفحات -
تاریخ انتشار 1995